Re: Image quality in exported documents
Date: Tue, 19 Aug 2003 11:29:30 +1000 From: Alistair Atkinson [EMAIL PROTECTED] Subject: Image quality in exported documents To: [EMAIL PROTECTED] Hello, I've been using Lyx for about 12 months, and think it's an absolutely brilliant piece of software. I am currently using version 1.3.1. However, I have been having major difficulties with the quality of images in a document when exporting to DVI, PS or PDF. Images appear kind of blocky, almost like they are at a low resolution. I have tried with various image formats, including JPEG, GIF, PNG and EPS. I have included the graphicx package, as I understood that this may be beneficial when using JPEGs, but it didn't seem to help. I have tried using different programs, such as dvips, pdflatex, and tex2pdf, I've read the thread on this mail, and I confirm that bitmap eps gives poor results on diagrams and screen saves, unless the original size is retained. I'm surprised that tex2pdf doens't give better results, as it avoids backconversion of bitmappped eps produced from JPG, PNG and PDF bitmaps, if the native image lies in the same dir as the eps converted one. Was this the case ? Example: main.lyx document foo.png original bitmap foo.eps bitmapped eps (obtained e.g by convert foo.png foo.eps) all in the same dir: tex2pdf should provide a pdf with the image quality of the original png, and dvips/ps2pdf a pdf with a degraded quality depending mostly on resizing. -- Jean-Pierre
Re: Image quality in exported documents
Jean-Pierre said: I've read the thread on this mail, and I confirm that bitmap eps gives poor results on diagrams and screen saves, unless the original size is retained. A way to improve the appearance of bitmap .eps files is to load them into PhotoShop 6 or later and save them out with ``Image Interpolation'' turned on. I've a sample of this on my personal Web pages, e-mail me if you want the link. William
Re: Image quality in exported documents
Date: Mon, 25 Aug 2003 09:29:31 -0400 From: William Adams [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Re: Image quality in exported documents Jean-Pierre said: I've read the thread on this mail, and I confirm that bitmap eps gives poor results on diagrams and screen saves, unless the original size is retained. A way to improve the appearance of bitmap .eps files is to load them into PhotoShop 6 or later and save them out with ``Image Interpolation'' turned on. I've a sample of this on my personal Web pages, e-mail me if you want the link. William That's a workaround, but what happens if you resize the eps in the LyX doc ? If you need to interpolate again at further size changes, pdflatex is a better solution IMHO (and tex2pdf works out hyperref args for you). -- Jean-Pierre
Re: Image quality in exported documents
Jean-Pierre said: (re: PhotoShop 6+ image interpolation) That's a workaround, but what happens if you resize the eps in the LyX doc ? If you need to interpolate again at further size changes, pdflatex is a better solution IMHO (and tex2pdf works out hyperref args for you). If you need to ask the first question, I don't see how you can judge that something else is a better solution. Here's that .pdf which I mentioned: http://members.aol.com/willadams/portfolio/interfaceconcepts/ screengrabcomp.pdf View in a semi-recent version (4 or 5) of Adobe Acrobat and zoom in / out to compare / contrast. (Irritatingly Adobe Reader 6 seems to apply the same scaling / interpolation technique to all the images w/ a default install / settings) William -- William Adams, publishing specialist voice - 717-731-6707 | Fax - 717-731-6708 www.atlis.com
Re: Image quality in exported documents
Date: Tue, 19 Aug 2003 11:29:30 +1000 From: Alistair Atkinson [EMAIL PROTECTED] Subject: Image quality in exported documents To: [EMAIL PROTECTED] Hello, I've been using Lyx for about 12 months, and think it's an absolutely brilliant piece of software. I am currently using version 1.3.1. However, I have been having major difficulties with the quality of images in a document when exporting to DVI, PS or PDF. Images appear kind of blocky, almost like they are at a low resolution. I have tried with various image formats, including JPEG, GIF, PNG and EPS. I have included the graphicx package, as I understood that this may be beneficial when using JPEGs, but it didn't seem to help. I have tried using different programs, such as dvips, pdflatex, and tex2pdf, I've read the thread on this mail, and I confirm that bitmap eps gives poor results on diagrams and screen saves, unless the original size is retained. I'm surprised that tex2pdf doens't give better results, as it avoids backconversion of bitmappped eps produced from JPG, PNG and PDF bitmaps, if the native image lies in the same dir as the eps converted one. Was this the case ? Example: main.lyx document foo.png original bitmap foo.eps bitmapped eps (obtained e.g by convert foo.png foo.eps) all in the same dir: tex2pdf should provide a pdf with the image quality of the original png, and dvips/ps2pdf a pdf with a degraded quality depending mostly on resizing. -- Jean-Pierre
Re: Image quality in exported documents
Jean-Pierre said: I've read the thread on this mail, and I confirm that bitmap eps gives poor results on diagrams and screen saves, unless the original size is retained. A way to improve the appearance of bitmap .eps files is to load them into PhotoShop 6 or later and save them out with ``Image Interpolation'' turned on. I've a sample of this on my personal Web pages, e-mail me if you want the link. William
Re: Image quality in exported documents
Date: Mon, 25 Aug 2003 09:29:31 -0400 From: William Adams [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Re: Image quality in exported documents Jean-Pierre said: I've read the thread on this mail, and I confirm that bitmap eps gives poor results on diagrams and screen saves, unless the original size is retained. A way to improve the appearance of bitmap .eps files is to load them into PhotoShop 6 or later and save them out with ``Image Interpolation'' turned on. I've a sample of this on my personal Web pages, e-mail me if you want the link. William That's a workaround, but what happens if you resize the eps in the LyX doc ? If you need to interpolate again at further size changes, pdflatex is a better solution IMHO (and tex2pdf works out hyperref args for you). -- Jean-Pierre
Re: Image quality in exported documents
Jean-Pierre said: (re: PhotoShop 6+ image interpolation) That's a workaround, but what happens if you resize the eps in the LyX doc ? If you need to interpolate again at further size changes, pdflatex is a better solution IMHO (and tex2pdf works out hyperref args for you). If you need to ask the first question, I don't see how you can judge that something else is a better solution. Here's that .pdf which I mentioned: http://members.aol.com/willadams/portfolio/interfaceconcepts/ screengrabcomp.pdf View in a semi-recent version (4 or 5) of Adobe Acrobat and zoom in / out to compare / contrast. (Irritatingly Adobe Reader 6 seems to apply the same scaling / interpolation technique to all the images w/ a default install / settings) William -- William Adams, publishing specialist voice - 717-731-6707 | Fax - 717-731-6708 www.atlis.com
Re: Image quality in exported documents
>>Date: Tue, 19 Aug 2003 11:29:30 +1000 >>From: Alistair Atkinson <[EMAIL PROTECTED]> >>Subject: Image quality in exported documents >>To: [EMAIL PROTECTED] >> >>Hello, >> >>I've been using Lyx for about 12 months, and think it's an absolutely >>brilliant piece of software. I am currently using version 1.3.1. >> >>However, I have been having major difficulties with the quality of images in a >>document when exporting to DVI, PS or PDF. Images appear kind of "blocky", >>almost like they are at a low resolution. >> >>I have tried with various image formats, including JPEG, GIF, PNG and EPS. I >>have included the graphicx package, as I understood that this may be >>beneficial when using JPEGs, but it didn't seem to help. >> >>I have tried using different programs, such as dvips, pdflatex, and tex2pdf, I've read the thread on this mail, and I confirm that bitmap eps gives poor results on diagrams and screen saves, unless the original size is retained. I'm surprised that tex2pdf doens't give better results, as it avoids backconversion of bitmappped eps produced from JPG, PNG and PDF bitmaps, if the native image lies in the same dir as the eps converted one. Was this the case ? Example: main.lyx document foo.png original bitmap foo.eps bitmapped eps (obtained e.g by convert foo.png foo.eps) all in the same dir: tex2pdf should provide a pdf with the image quality of the original png, and dvips/ps2pdf a pdf with a degraded quality depending mostly on resizing. -- Jean-Pierre
Re: Image quality in exported documents
Jean-Pierre said: >I've read the thread on this mail, and I confirm that >bitmap eps gives poor results on diagrams and screen saves, >unless the original size is retained. A way to improve the appearance of bitmap .eps files is to load them into PhotoShop 6 or later and save them out with ``Image Interpolation'' turned on. I've a sample of this on my personal Web pages, e-mail me if you want the link. William
Re: Image quality in exported documents
>>Date: Mon, 25 Aug 2003 09:29:31 -0400 >>From: William Adams <[EMAIL PROTECTED]> >>To: [EMAIL PROTECTED] >>Subject: Re: Image quality in exported documents >> >>Jean-Pierre said: >>>I've read the thread on this mail, and I confirm that >>>bitmap eps gives poor results on diagrams and screen saves, >>>unless the original size is retained. >> >>A way to improve the appearance of bitmap .eps files is to load them >>into PhotoShop 6 or later and save them out with ``Image Interpolation'' >>turned on. >> >>I've a sample of this on my personal Web pages, e-mail me if you want >>the link. >> >>William That's a workaround, but what happens if you resize the eps in the LyX doc ? If you need to interpolate again at further size changes, pdflatex is a better solution IMHO (and tex2pdf works out hyperref args for you). -- Jean-Pierre
Re: Image quality in exported documents
Jean-Pierre said: (re: PhotoShop 6+ image interpolation) That's a workaround, but what happens if you resize the eps in the LyX doc ? If you need to interpolate again at further size changes, pdflatex is a better solution IMHO (and tex2pdf works out hyperref args for you). If you need to ask the first question, I don't see how you can judge that something else is a better solution. Here's that .pdf which I mentioned: http://members.aol.com/willadams/portfolio/interfaceconcepts/ screengrabcomp.pdf View in a semi-recent version (4 or 5) of Adobe Acrobat and zoom in / out to compare / contrast. (Irritatingly Adobe Reader 6 seems to apply the same scaling / interpolation technique to all the images w/ a default install / settings) William -- William Adams, publishing specialist voice - 717-731-6707 | Fax - 717-731-6708 www.atlis.com
Re: Image quality in exported documents
Perhaps. I've taken the PNG and used GIMP to convert it to an EPS. The EPS What software generated the PNG image? Did it have an option for any other format like JPEG or PS? Doesn't look like GIMP does a good job with PNG files.. with the version I have, it didn't even give me the option to export PNG to PS... nirmal
Re: Image quality in exported documents
Alistair Atkinson wrote: Hello, I've been using Lyx for about 12 months, and think it's an absolutely brilliant piece of software. I am currently using version 1.3.1. However, I have been having major difficulties with the quality of images in a document when exporting to DVI, PS or PDF. Images appear kind of blocky, almost like they are at a low resolution. I have tried with various image formats, including JPEG, GIF, PNG and EPS. I have included the graphicx package, as I understood that this may be beneficial when using JPEGs, but it didn't seem to help. I have tried using different programs, such as dvips, pdflatex, and tex2pdf, but they all produce poor output. I am guessing that these programs are not the problem, because the DVI itself is poor quality, so I am thinking it might be a Latex issue? I am not very knowledgable when it comes to Latex so I can't be sure. Any help on this issues is much appreciated. I'm starting a thesis in a few weeks, and would hate to have to use a normal word processor, but if I can't get my images and charts etc to look acceptable I may have no choice. I don't know what kind of images these are. But if you can - use vector formats instead of bitmap formats like jpeg/gif. eps/ps support both vector and bitmap graphichs, so it can be good or bad depending on what's really in the file. Converting a jpeg to eps does obviously not make it vector graphichs. There are some things, such as photos, that cannot be made with vector graphichs. If so, use the highest resolution you can for anything you want to print. I usually draw my figures in xfig, and use the xfig external inset in lyx. That gives nice figures in: * direct printing from lyx (via dvips) * .pdf for reading on screen * .pdf printed If your images are software generated (as opposed to drawing them in a xfig-like program) check if your software can generate postscript directly without going via some bitmap format. Helge Hafting
Re: Image quality in exported documents
Hi Alistair, though you might meanwhile have solved the problem, here's another suggestion how to improve the image quality. First of all I found that your images delivered in the sample file have a resolution of 70-something dpi, which as far as I know is a little low for printing. When you export your charts to png or eps you should be able to set the resolution somewhere. Try to use at least 300 dpi. With this the eps-files will become huge, but the exported pdf will still have a decent size. To convert the png to eps I used convert file.png file.eps in the shell / terminal. It's pretty quick and leads to good results. Regards, Katrin
Re: Image quality in exported documents
Thanks very much to everyone for the help and suggestions. It turns out that Katrin was correct, and the problem was with the image resolution rather than the methods used to export the document. Thanks again, Alistair On Wed, 20 Aug 2003 07:47 pm, Katrin Pietzsch wrote: Hi Alistair, though you might meanwhile have solved the problem, here's another suggestion how to improve the image quality. First of all I found that your images delivered in the sample file have a resolution of 70-something dpi, which as far as I know is a little low for printing. When you export your charts to png or eps you should be able to set the resolution somewhere. Try to use at least 300 dpi. With this the eps-files will become huge, but the exported pdf will still have a decent size. To convert the png to eps I used convert file.png file.eps in the shell / terminal. It's pretty quick and leads to good results. Regards, Katrin
Re: Image quality in exported documents
If you use convert, try convert file.png eps2:file.eps This will produce a level 2 eps file, which allows for a compressed bitmapped to be included, rather than the default type 1 eps, which stores an uncompressed bitmap. I don't know if it will make much difference with a png file, but it does with jpgs. The quality should be the same. (man png says pngs are compressed, so it might well make a difference) Rod On Wed, 20 Aug 2003, Alistair Atkinson wrote: Thanks very much to everyone for the help and suggestions. It turns out that Katrin was correct, and the problem was with the image resolution rather than the methods used to export the document. Thanks again, Alistair On Wed, 20 Aug 2003 07:47 pm, Katrin Pietzsch wrote: Hi Alistair, though you might meanwhile have solved the problem, here's another suggestion how to improve the image quality. First of all I found that your images delivered in the sample file have a resolution of 70-something dpi, which as far as I know is a little low for printing. When you export your charts to png or eps you should be able to set the resolution somewhere. Try to use at least 300 dpi. With this the eps-files will become huge, but the exported pdf will still have a decent size. To convert the png to eps I used convert file.png file.eps in the shell / terminal. It's pretty quick and leads to good results. Regards, Katrin _ rod | Beneath the waves, the waves / That's where I will be / | I'm going to see the cow beneath the sea. | They Might Be Giants, Lincoln
Re: Image quality in exported documents
Perhaps. I've taken the PNG and used GIMP to convert it to an EPS. The EPS What software generated the PNG image? Did it have an option for any other format like JPEG or PS? Doesn't look like GIMP does a good job with PNG files.. with the version I have, it didn't even give me the option to export PNG to PS... nirmal
Re: Image quality in exported documents
Alistair Atkinson wrote: Hello, I've been using Lyx for about 12 months, and think it's an absolutely brilliant piece of software. I am currently using version 1.3.1. However, I have been having major difficulties with the quality of images in a document when exporting to DVI, PS or PDF. Images appear kind of blocky, almost like they are at a low resolution. I have tried with various image formats, including JPEG, GIF, PNG and EPS. I have included the graphicx package, as I understood that this may be beneficial when using JPEGs, but it didn't seem to help. I have tried using different programs, such as dvips, pdflatex, and tex2pdf, but they all produce poor output. I am guessing that these programs are not the problem, because the DVI itself is poor quality, so I am thinking it might be a Latex issue? I am not very knowledgable when it comes to Latex so I can't be sure. Any help on this issues is much appreciated. I'm starting a thesis in a few weeks, and would hate to have to use a normal word processor, but if I can't get my images and charts etc to look acceptable I may have no choice. I don't know what kind of images these are. But if you can - use vector formats instead of bitmap formats like jpeg/gif. eps/ps support both vector and bitmap graphichs, so it can be good or bad depending on what's really in the file. Converting a jpeg to eps does obviously not make it vector graphichs. There are some things, such as photos, that cannot be made with vector graphichs. If so, use the highest resolution you can for anything you want to print. I usually draw my figures in xfig, and use the xfig external inset in lyx. That gives nice figures in: * direct printing from lyx (via dvips) * .pdf for reading on screen * .pdf printed If your images are software generated (as opposed to drawing them in a xfig-like program) check if your software can generate postscript directly without going via some bitmap format. Helge Hafting
Re: Image quality in exported documents
Hi Alistair, though you might meanwhile have solved the problem, here's another suggestion how to improve the image quality. First of all I found that your images delivered in the sample file have a resolution of 70-something dpi, which as far as I know is a little low for printing. When you export your charts to png or eps you should be able to set the resolution somewhere. Try to use at least 300 dpi. With this the eps-files will become huge, but the exported pdf will still have a decent size. To convert the png to eps I used convert file.png file.eps in the shell / terminal. It's pretty quick and leads to good results. Regards, Katrin
Re: Image quality in exported documents
Thanks very much to everyone for the help and suggestions. It turns out that Katrin was correct, and the problem was with the image resolution rather than the methods used to export the document. Thanks again, Alistair On Wed, 20 Aug 2003 07:47 pm, Katrin Pietzsch wrote: Hi Alistair, though you might meanwhile have solved the problem, here's another suggestion how to improve the image quality. First of all I found that your images delivered in the sample file have a resolution of 70-something dpi, which as far as I know is a little low for printing. When you export your charts to png or eps you should be able to set the resolution somewhere. Try to use at least 300 dpi. With this the eps-files will become huge, but the exported pdf will still have a decent size. To convert the png to eps I used convert file.png file.eps in the shell / terminal. It's pretty quick and leads to good results. Regards, Katrin
Re: Image quality in exported documents
If you use convert, try convert file.png eps2:file.eps This will produce a level 2 eps file, which allows for a compressed bitmapped to be included, rather than the default type 1 eps, which stores an uncompressed bitmap. I don't know if it will make much difference with a png file, but it does with jpgs. The quality should be the same. (man png says pngs are compressed, so it might well make a difference) Rod On Wed, 20 Aug 2003, Alistair Atkinson wrote: Thanks very much to everyone for the help and suggestions. It turns out that Katrin was correct, and the problem was with the image resolution rather than the methods used to export the document. Thanks again, Alistair On Wed, 20 Aug 2003 07:47 pm, Katrin Pietzsch wrote: Hi Alistair, though you might meanwhile have solved the problem, here's another suggestion how to improve the image quality. First of all I found that your images delivered in the sample file have a resolution of 70-something dpi, which as far as I know is a little low for printing. When you export your charts to png or eps you should be able to set the resolution somewhere. Try to use at least 300 dpi. With this the eps-files will become huge, but the exported pdf will still have a decent size. To convert the png to eps I used convert file.png file.eps in the shell / terminal. It's pretty quick and leads to good results. Regards, Katrin _ rod | Beneath the waves, the waves / That's where I will be / | I'm going to see the cow beneath the sea. | They Might Be Giants, Lincoln
Re: Image quality in exported documents
> Perhaps. I've taken the PNG and used GIMP to convert it to an EPS. The EPS What software generated the PNG image? Did it have an option for any other format like JPEG or PS? Doesn't look like GIMP does a good job with PNG files.. with the version I have, it didn't even give me the option to export PNG to PS... nirmal
Re: Image quality in exported documents
Alistair Atkinson wrote: Hello, I've been using Lyx for about 12 months, and think it's an absolutely brilliant piece of software. I am currently using version 1.3.1. However, I have been having major difficulties with the quality of images in a document when exporting to DVI, PS or PDF. Images appear kind of "blocky", almost like they are at a low resolution. I have tried with various image formats, including JPEG, GIF, PNG and EPS. I have included the graphicx package, as I understood that this may be beneficial when using JPEGs, but it didn't seem to help. I have tried using different programs, such as dvips, pdflatex, and tex2pdf, but they all produce poor output. I am guessing that these programs are not the problem, because the DVI itself is poor quality, so I am thinking it might be a Latex issue? I am not very knowledgable when it comes to Latex so I can't be sure. Any help on this issues is much appreciated. I'm starting a thesis in a few weeks, and would hate to have to use a normal word processor, but if I can't get my images and charts etc to look acceptable I may have no choice. I don't know what kind of images these are. But if you can - use vector formats instead of bitmap formats like jpeg/gif. eps/ps support both vector and bitmap graphichs, so it can be good or bad depending on what's really in the file. Converting a jpeg to eps does obviously not make it vector graphichs. There are some things, such as photos, that cannot be made with vector graphichs. If so, use the highest resolution you can for anything you want to print. I usually draw my figures in xfig, and use the xfig external inset in lyx. That gives nice figures in: * direct printing from lyx (via dvips) * .pdf for reading on screen * .pdf printed If your images are software generated (as opposed to drawing them in a xfig-like program) check if your software can generate postscript directly without going via some bitmap format. Helge Hafting
Re: Image quality in exported documents
Hi Alistair, though you might meanwhile have solved the problem, here's another suggestion how to improve the image quality. First of all I found that your images delivered in the sample file have a resolution of 70-something dpi, which as far as I know is a little low for printing. When you export your charts to png or eps you should be able to set the resolution somewhere. Try to use at least 300 dpi. With this the eps-files will become huge, but the exported pdf will still have a decent size. To convert the png to eps I used "convert file.png file.eps" in the shell / terminal. It's pretty quick and leads to good results. Regards, Katrin
Re: Image quality in exported documents
Thanks very much to everyone for the help and suggestions. It turns out that Katrin was correct, and the problem was with the image resolution rather than the methods used to export the document. Thanks again, Alistair On Wed, 20 Aug 2003 07:47 pm, Katrin Pietzsch wrote: > Hi Alistair, > though you might meanwhile have solved the problem, here's another > suggestion how to improve the image quality. First of all I found that > your images delivered in the sample file have a resolution of > 70-something dpi, which as far as I know is a little low for printing. > When you export your charts to png or eps you should be able to set the > resolution somewhere. Try to use at least 300 dpi. With this the > eps-files will become huge, but the exported pdf will still have a > decent size. To convert the png to eps I used "convert file.png > file.eps" in the shell / terminal. It's pretty quick and leads to good > results. > > Regards, > Katrin
Re: Image quality in exported documents
If you use convert, try convert file.png eps2:file.eps This will produce a level 2 eps file, which allows for a compressed bitmapped to be included, rather than the default type 1 eps, which stores an uncompressed bitmap. I don't know if it will make much difference with a png file, but it does with jpgs. The quality should be the same. (man png says pngs are compressed, so it might well make a difference) Rod On Wed, 20 Aug 2003, Alistair Atkinson wrote: > Thanks very much to everyone for the help and suggestions. It turns out that > Katrin was correct, and the problem was with the image resolution rather than > the methods used to export the document. > > Thanks again, > Alistair > > On Wed, 20 Aug 2003 07:47 pm, Katrin Pietzsch wrote: > > Hi Alistair, > > though you might meanwhile have solved the problem, here's another > > suggestion how to improve the image quality. First of all I found that > > your images delivered in the sample file have a resolution of > > 70-something dpi, which as far as I know is a little low for printing. > > When you export your charts to png or eps you should be able to set the > > resolution somewhere. Try to use at least 300 dpi. With this the > > eps-files will become huge, but the exported pdf will still have a > > decent size. To convert the png to eps I used "convert file.png > > file.eps" in the shell / terminal. It's pretty quick and leads to good > > results. > > > > Regards, > > Katrin > > _ rod | "Beneath the waves, the waves / That's where I will be / | I'm going to see the cow beneath the sea." | They Might Be Giants, Lincoln
Image quality in exported documents
Hello, I've been using Lyx for about 12 months, and think it's an absolutely brilliant piece of software. I am currently using version 1.3.1. However, I have been having major difficulties with the quality of images in a document when exporting to DVI, PS or PDF. Images appear kind of blocky, almost like they are at a low resolution. I have tried with various image formats, including JPEG, GIF, PNG and EPS. I have included the graphicx package, as I understood that this may be beneficial when using JPEGs, but it didn't seem to help. I have tried using different programs, such as dvips, pdflatex, and tex2pdf, but they all produce poor output. I am guessing that these programs are not the problem, because the DVI itself is poor quality, so I am thinking it might be a Latex issue? I am not very knowledgable when it comes to Latex so I can't be sure. Any help on this issues is much appreciated. I'm starting a thesis in a few weeks, and would hate to have to use a normal word processor, but if I can't get my images and charts etc to look acceptable I may have no choice. Regards, Alistair
RE: Image quality in exported documents
Are you talking about the preview (on screen view) or the printout too? Can you send a sample (small) document? What kind of images are we really talking about? The problem may be your images (if the lossless format looks bad, the lossy or compressed version won't look better than that anyway). -Original Message- From: Alistair Atkinson [mailto:[EMAIL PROTECTED] Sent: Monday, August 18, 2003 9:30 PM To: [EMAIL PROTECTED] Subject: Image quality in exported documents Hello, I've been using Lyx for about 12 months, and think it's an absolutely brilliant piece of software. I am currently using version 1.3.1. However, I have been having major difficulties with the quality of images in a document when exporting to DVI, PS or PDF. Images appear kind of blocky, almost like they are at a low resolution. I have tried with various image formats, including JPEG, GIF, PNG and EPS. I have included the graphicx package, as I understood that this may be beneficial when using JPEGs, but it didn't seem to help. I have tried using different programs, such as dvips, pdflatex, and tex2pdf, but they all produce poor output. I am guessing that these programs are not the problem, because the DVI itself is poor quality, so I am thinking it might be a Latex issue? I am not very knowledgable when it comes to Latex so I can't be sure. Any help on this issues is much appreciated. I'm starting a thesis in a few weeks, and would hate to have to use a normal word processor, but if I can't get my images and charts etc to look acceptable I may have no choice. Regards, Alistair
Re: Image quality in exported documents
Alistair Atkinson wrote: in a document when exporting to DVI, PS or PDF. Images appear kind of blocky, almost like they are at a low resolution. I think I've seen this before.. the problem is usually when the native format in which the image was created was not eps for a PS or jpg for a PDFlatex conversion. If it was a native eps, the PS file should show the graphic w/o any blockiness... if it's a native jpg, the pdflatex version should show it properly.. I think the automatic conversion from jpg to eps may be a reason for the poorer quality. So nowadays, I convert the jpg to eps manually (A. Illustrator does a great job of this btw as I recently found out.. it's not free unfortunately) and include it in the document. can't get my images and charts etc to look acceptable I may have no choice. It's definitely possible to get the images to look as they should.. might need to play around a little in the beginning and figure out a mechanism that works for different image formats.. nirmal
Re: Image quality in exported documents
On Wed, 20 Aug 2003 01:16 pm, Remzi Seker wrote: Are you talking about the preview (on screen view) or the printout too? Both. Can you send a sample (small) document? Sure, I've attached an example Lyx file and associated images. What kind of images are we really talking about? Mainly general chart/graphs. The problem may be your images (if the lossless format looks bad, the lossy or compressed version won't look better than that anyway). Perhaps. I've taken the PNG and used GIMP to convert it to an EPS. The EPS is not as good quality as the PNG, but still better than when printed in a document exported from Lyx. Best, Alistair sample.tar.gz Description: application/tgz
Re: Image quality in exported documents
can't get my images and charts etc to look acceptable I may have no choice. It's definitely possible to get the images to look as they should.. might need to play around a little in the beginning and figure out a mechanism that works for different image formats.. I did play around a bit to get good-looking images and charts in Lyx. The best way I found so far for creating such figures is either exporting to eps directly for printing to a ps file, than run it through ps2eps. In some cases the pdf output does not look very good on screen, but it usually does so when printed. Jeannette
Image quality in exported documents
Hello, I've been using Lyx for about 12 months, and think it's an absolutely brilliant piece of software. I am currently using version 1.3.1. However, I have been having major difficulties with the quality of images in a document when exporting to DVI, PS or PDF. Images appear kind of blocky, almost like they are at a low resolution. I have tried with various image formats, including JPEG, GIF, PNG and EPS. I have included the graphicx package, as I understood that this may be beneficial when using JPEGs, but it didn't seem to help. I have tried using different programs, such as dvips, pdflatex, and tex2pdf, but they all produce poor output. I am guessing that these programs are not the problem, because the DVI itself is poor quality, so I am thinking it might be a Latex issue? I am not very knowledgable when it comes to Latex so I can't be sure. Any help on this issues is much appreciated. I'm starting a thesis in a few weeks, and would hate to have to use a normal word processor, but if I can't get my images and charts etc to look acceptable I may have no choice. Regards, Alistair
RE: Image quality in exported documents
Are you talking about the preview (on screen view) or the printout too? Can you send a sample (small) document? What kind of images are we really talking about? The problem may be your images (if the lossless format looks bad, the lossy or compressed version won't look better than that anyway). -Original Message- From: Alistair Atkinson [mailto:[EMAIL PROTECTED] Sent: Monday, August 18, 2003 9:30 PM To: [EMAIL PROTECTED] Subject: Image quality in exported documents Hello, I've been using Lyx for about 12 months, and think it's an absolutely brilliant piece of software. I am currently using version 1.3.1. However, I have been having major difficulties with the quality of images in a document when exporting to DVI, PS or PDF. Images appear kind of blocky, almost like they are at a low resolution. I have tried with various image formats, including JPEG, GIF, PNG and EPS. I have included the graphicx package, as I understood that this may be beneficial when using JPEGs, but it didn't seem to help. I have tried using different programs, such as dvips, pdflatex, and tex2pdf, but they all produce poor output. I am guessing that these programs are not the problem, because the DVI itself is poor quality, so I am thinking it might be a Latex issue? I am not very knowledgable when it comes to Latex so I can't be sure. Any help on this issues is much appreciated. I'm starting a thesis in a few weeks, and would hate to have to use a normal word processor, but if I can't get my images and charts etc to look acceptable I may have no choice. Regards, Alistair
Re: Image quality in exported documents
Alistair Atkinson wrote: in a document when exporting to DVI, PS or PDF. Images appear kind of blocky, almost like they are at a low resolution. I think I've seen this before.. the problem is usually when the native format in which the image was created was not eps for a PS or jpg for a PDFlatex conversion. If it was a native eps, the PS file should show the graphic w/o any blockiness... if it's a native jpg, the pdflatex version should show it properly.. I think the automatic conversion from jpg to eps may be a reason for the poorer quality. So nowadays, I convert the jpg to eps manually (A. Illustrator does a great job of this btw as I recently found out.. it's not free unfortunately) and include it in the document. can't get my images and charts etc to look acceptable I may have no choice. It's definitely possible to get the images to look as they should.. might need to play around a little in the beginning and figure out a mechanism that works for different image formats.. nirmal
Re: Image quality in exported documents
On Wed, 20 Aug 2003 01:16 pm, Remzi Seker wrote: Are you talking about the preview (on screen view) or the printout too? Both. Can you send a sample (small) document? Sure, I've attached an example Lyx file and associated images. What kind of images are we really talking about? Mainly general chart/graphs. The problem may be your images (if the lossless format looks bad, the lossy or compressed version won't look better than that anyway). Perhaps. I've taken the PNG and used GIMP to convert it to an EPS. The EPS is not as good quality as the PNG, but still better than when printed in a document exported from Lyx. Best, Alistair sample.tar.gz Description: application/tgz
Re: Image quality in exported documents
can't get my images and charts etc to look acceptable I may have no choice. It's definitely possible to get the images to look as they should.. might need to play around a little in the beginning and figure out a mechanism that works for different image formats.. I did play around a bit to get good-looking images and charts in Lyx. The best way I found so far for creating such figures is either exporting to eps directly for printing to a ps file, than run it through ps2eps. In some cases the pdf output does not look very good on screen, but it usually does so when printed. Jeannette
Image quality in exported documents
Hello, I've been using Lyx for about 12 months, and think it's an absolutely brilliant piece of software. I am currently using version 1.3.1. However, I have been having major difficulties with the quality of images in a document when exporting to DVI, PS or PDF. Images appear kind of "blocky", almost like they are at a low resolution. I have tried with various image formats, including JPEG, GIF, PNG and EPS. I have included the graphicx package, as I understood that this may be beneficial when using JPEGs, but it didn't seem to help. I have tried using different programs, such as dvips, pdflatex, and tex2pdf, but they all produce poor output. I am guessing that these programs are not the problem, because the DVI itself is poor quality, so I am thinking it might be a Latex issue? I am not very knowledgable when it comes to Latex so I can't be sure. Any help on this issues is much appreciated. I'm starting a thesis in a few weeks, and would hate to have to use a normal word processor, but if I can't get my images and charts etc to look acceptable I may have no choice. Regards, Alistair
RE: Image quality in exported documents
Are you talking about the preview (on screen view) or the printout too? Can you send a sample (small) document? What kind of images are we really talking about? The problem may be your images (if the lossless format looks bad, the lossy or compressed version won't look better than that anyway). -Original Message- From: Alistair Atkinson [mailto:[EMAIL PROTECTED] Sent: Monday, August 18, 2003 9:30 PM To: [EMAIL PROTECTED] Subject: Image quality in exported documents Hello, I've been using Lyx for about 12 months, and think it's an absolutely brilliant piece of software. I am currently using version 1.3.1. However, I have been having major difficulties with the quality of images in a document when exporting to DVI, PS or PDF. Images appear kind of "blocky", almost like they are at a low resolution. I have tried with various image formats, including JPEG, GIF, PNG and EPS. I have included the graphicx package, as I understood that this may be beneficial when using JPEGs, but it didn't seem to help. I have tried using different programs, such as dvips, pdflatex, and tex2pdf, but they all produce poor output. I am guessing that these programs are not the problem, because the DVI itself is poor quality, so I am thinking it might be a Latex issue? I am not very knowledgable when it comes to Latex so I can't be sure. Any help on this issues is much appreciated. I'm starting a thesis in a few weeks, and would hate to have to use a normal word processor, but if I can't get my images and charts etc to look acceptable I may have no choice. Regards, Alistair
Re: Image quality in exported documents
Alistair Atkinson wrote: > in a document when exporting to DVI, PS or PDF. Images appear kind of > "blocky", almost like they are at a low resolution. I think I've seen this before.. the problem is usually when the native format in which the image was created was not eps for a PS or jpg for a PDFlatex conversion. If it was a native eps, the PS file should show the graphic w/o any "blockiness"... if it's a native jpg, the pdflatex version should show it properly.. I think the automatic conversion from jpg to eps may be a reason for the poorer quality. So nowadays, I convert the jpg to eps manually (A. Illustrator does a great job of this btw as I recently found out.. it's not free unfortunately) and include it in the document. > can't get my images and charts etc to look acceptable I may have no > choice. It's definitely possible to get the images to look as they should.. might need to play around a little in the beginning and figure out a mechanism that works for different image formats.. nirmal
Re: Image quality in exported documents
On Wed, 20 Aug 2003 01:16 pm, Remzi Seker wrote: > Are you talking about the preview (on screen view) or the printout too? Both. > Can you send a sample (small) document? Sure, I've attached an example Lyx file and associated images. > What kind of images are we really talking about? Mainly general chart/graphs. > The problem may be your images (if the lossless > format looks bad, the lossy or compressed version won't look better than > that anyway). Perhaps. I've taken the PNG and used GIMP to convert it to an EPS. The EPS is not as good quality as the PNG, but still better than when printed in a document exported from Lyx. Best, Alistair sample.tar.gz Description: application/tgz
Re: Image quality in exported documents
> > can't get my images and charts etc to look acceptable I may have no > > choice. > > It's definitely possible to get the images to look as they should.. might > need to play around a little in the beginning and figure out a mechanism > that works for different image formats.. I did play around a bit to get good-looking images and charts in Lyx. The best way I found so far for creating such figures is either exporting to eps directly for printing to a ps file, than run it through ps2eps. In some cases the pdf output does not look very good on screen, but it usually does so when printed. Jeannette
