Re: LyX SVG output size wrong
On 20/09/2018 13:56, Jean-Marc Lasgouttes wrote: I think that at this point it would be a good idea to open a ticket. Ticket at https://www.lyx.org/trac/ticket/11301. Daniel
Re: LyX SVG output size wrong
On 20/09/2018 14:34, Jean-Marc Lasgouttes wrote: Le 20/09/2018 à 14:24, Daniel a écrit : I just tried a conversion via Inkscape which works fine. Maybe there is a way to replace the conversion via rsvg-convert with Inkscape? Inkscape is used when rsvg-convert is not available. Otherwise, you can change it by hand in your preferences. Making rsvg-convert unavailable indeed solves the problem. Thanks. I'll ask the rsvg people anyway since it is a solution only for those who have Inkscape... Daniel
Re: LyX SVG output size wrong
On 20/09/2018 14:24, Jean-Marc Lasgouttes wrote: Le 20/09/2018 à 14:23, Daniel a écrit : On 20/09/2018 14:00, Jean-Marc Lasgouttes wrote: Le 20/09/2018 à 13:43, Daniel a écrit : No idea what my converter is. How do I find out? I just tried out online SVG to PNG converters. With Imagick the result was fine. However, with another tool that (like...) used rsvg the result was the same as in LyX. So maybe rsvg does not handle them correctly or needs some argument or so? To find what your svg converter is, go In Tools>Preferences>File Handling>Converters, and look at the converters from svg to something else. It's rsvg-convert then. If you can get the rsvg-convert people to tell us how we are supposed to handle images, there may be things we can do. Good idea. I'll try.
Re: LyX SVG output size wrong
Le 20/09/2018 à 14:24, Daniel a écrit : I just tried a conversion via Inkscape which works fine. Maybe there is a way to replace the conversion via rsvg-convert with Inkscape? Inkscape is used when rsvg-convert is not available. Otherwise, you can change it by hand in your preferences. JMarc
Re: LyX SVG output size wrong
On 20/09/2018 13:56, Jean-Marc Lasgouttes wrote: Le 20/09/2018 à 13:14, Daniel a écrit : On 20/09/2018 10:58, Jean-Marc Lasgouttes wrote: Le 20/09/2018 à 10:21, Daniel a écrit : This leads to the middle and right text in the attached file having different sizes in LyX while they have the same size in other applications I tested. It looks like we do not pass any information to the svg converter concerning dpi. A few questions: * what is you dpi setting in LyX? I couldn't find a setting for this in LyX. * what is your zoom setting in LyX? 120%. But both of these question concern just the representation within LyX and not in the output which I was mainly concerned about. Very good point. I did not get that initially. I think that at this point it would be a good idea to open a ticket. Unfortunately, I am not sure we will be able to do something about it. I just tried a conversion via Inkscape which works fine. Maybe there is a way to replace the conversion via rsvg-convert with Inkscape? Daniel
Re: LyX SVG output size wrong
Le 20/09/2018 à 14:23, Daniel a écrit : On 20/09/2018 14:00, Jean-Marc Lasgouttes wrote: Le 20/09/2018 à 13:43, Daniel a écrit : No idea what my converter is. How do I find out? I just tried out online SVG to PNG converters. With Imagick the result was fine. However, with another tool that (like...) used rsvg the result was the same as in LyX. So maybe rsvg does not handle them correctly or needs some argument or so? To find what your svg converter is, go In Tools>Preferences>File Handling>Converters, and look at the converters from svg to something else. It's rsvg-convert then. If you can get the rsvg-convert people to tell us how we are supposed to handle images, there may be things we can do. JMarc
Re: LyX SVG output size wrong
On 20/09/2018 14:00, Jean-Marc Lasgouttes wrote: Le 20/09/2018 à 13:43, Daniel a écrit : No idea what my converter is. How do I find out? I just tried out online SVG to PNG converters. With Imagick the result was fine. However, with another tool that (like...) used rsvg the result was the same as in LyX. So maybe rsvg does not handle them correctly or needs some argument or so? To find what your svg converter is, go In Tools>Preferences>File Handling>Converters, and look at the converters from svg to something else. It's rsvg-convert then. This report from 2016 seems to point to a rsvg bug: http://www.imagemagick.org/discourse-server/viewtopic.php?t=30591 JMarc
Re: LyX SVG output size wrong
Le 20/09/2018 à 13:43, Daniel a écrit : No idea what my converter is. How do I find out? I just tried out online SVG to PNG converters. With Imagick the result was fine. However, with another tool that (like...) used rsvg the result was the same as in LyX. So maybe rsvg does not handle them correctly or needs some argument or so? To find what your svg converter is, go In Tools>Preferences>File Handling>Converters, and look at the converters from svg to something else. This report from 2016 seems to point to a rsvg bug: http://www.imagemagick.org/discourse-server/viewtopic.php?t=30591 JMarc
Re: LyX SVG output size wrong
Le 20/09/2018 à 13:14, Daniel a écrit : On 20/09/2018 10:58, Jean-Marc Lasgouttes wrote: Le 20/09/2018 à 10:21, Daniel a écrit : This leads to the middle and right text in the attached file having different sizes in LyX while they have the same size in other applications I tested. It looks like we do not pass any information to the svg converter concerning dpi. A few questions: * what is you dpi setting in LyX? I couldn't find a setting for this in LyX. * what is your zoom setting in LyX? 120%. But both of these question concern just the representation within LyX and not in the output which I was mainly concerned about. Very good point. I did not get that initially. I think that at this point it would be a good idea to open a ticket. Unfortunately, I am not sure we will be able to do something about it. JMarc
Re: LyX SVG output size wrong
On 20/09/2018 13:39, Daniel wrote: On 20/09/2018 13:14, Daniel wrote: On 20/09/2018 10:58, Jean-Marc Lasgouttes wrote: Le 20/09/2018 à 10:21, Daniel a écrit : This leads to the middle and right text in the attached file having different sizes in LyX while they have the same size in other applications I tested. It looks like we do not pass any information to the svg converter concerning dpi. A few questions: * what is you dpi setting in LyX? I couldn't find a setting for this in LyX. * what is your zoom setting in LyX? 120%. But both of these question concern just the representation within LyX and not in the output which I was mainly concerned about. * what is your svg->* converter? I see here the same as what you describe. My system does not have rsvg-convert installed, so conversion is done by inkscape to EPS (why EPS? No idea). No idea what my converter is. How do I find out? I just tried out online SVG to PNG converters. With Imagick the result was fine. However, with another tool that (like...) used rsvg the result was the same as in LyX. So maybe rsvg does not handle them correctly or needs some argument or so? "like..." should be "likely..."
Re: LyX SVG output size wrong
On 20/09/2018 13:14, Daniel wrote: On 20/09/2018 10:58, Jean-Marc Lasgouttes wrote: Le 20/09/2018 à 10:21, Daniel a écrit : This leads to the middle and right text in the attached file having different sizes in LyX while they have the same size in other applications I tested. It looks like we do not pass any information to the svg converter concerning dpi. A few questions: * what is you dpi setting in LyX? I couldn't find a setting for this in LyX. * what is your zoom setting in LyX? 120%. But both of these question concern just the representation within LyX and not in the output which I was mainly concerned about. * what is your svg->* converter? I see here the same as what you describe. My system does not have rsvg-convert installed, so conversion is done by inkscape to EPS (why EPS? No idea). No idea what my converter is. How do I find out? I just tried out online SVG to PNG converters. With Imagick the result was fine. However, with another tool that (like...) used rsvg the result was the same as in LyX. So maybe rsvg does not handle them correctly or needs some argument or so? Daniel
Re: LyX SVG output size wrong
On 20/09/2018 10:58, Jean-Marc Lasgouttes wrote: Le 20/09/2018 à 10:21, Daniel a écrit : This leads to the middle and right text in the attached file having different sizes in LyX while they have the same size in other applications I tested. It looks like we do not pass any information to the svg converter concerning dpi. A few questions: * what is you dpi setting in LyX? I couldn't find a setting for this in LyX. * what is your zoom setting in LyX? 120%. But both of these question concern just the representation within LyX and not in the output which I was mainly concerned about. * what is your svg->* converter? I see here the same as what you describe. My system does not have rsvg-convert installed, so conversion is done by inkscape to EPS (why EPS? No idea). No idea what my converter is. How do I find out? Daniel
Re: LyX SVG output size wrong
On 2018-09-20 10:58, Jean-Marc Lasgouttes wrote: Le 20/09/2018 à 10:21, Daniel a écrit : Inkscape/Libre/Firefox: 1pt = 1.333px = 1.333 This corresponds to a setting of 96dpi. But obviously the number of pixels depends on your zoom setting in firefox/libreoffice..., doesn't it? Firefox/LibreOffice scale the SVG so that 1pt in the application matches 1.33px in the SVG. How many pixel that will be on your screen is determined by your DPI. Daniel
Re: LyX SVG output size wrong
Le 20/09/2018 à 10:21, Daniel a écrit : Inkscape/Libre/Firefox: 1pt = 1.333px = 1.333 This corresponds to a setting of 96dpi. But obviously the number of pixels depends on your zoom setting in firefox/libreoffice..., doesn't it? LyX: 1pt = 1px = 1 This leads to the middle and right text in the attached file having different sizes in LyX while they have the same size in other applications I tested. It looks like we do not pass any information to the svg converter concerning dpi. A few questions: * what is you dpi setting in LyX? * what is your zoom setting in LyX? * what is your svg->* converter? I see here the same as what you describe. My system does not have rsvg-convert installed, so conversion is done by inkscape to EPS (why EPS? No idea). JMarc
Re: LyX SVG output size wrong
On 20/09/2018 09:11, Daniel wrote: On 20/09/2018 00:05, Jean-Marc Lasgouttes wrote: Le 19/09/2018 à 23:54, Daniel a écrit : The link you gave assumes that everything is displayed at 90dpi (which gives the 1.25 once you know that 1pt is 1/72th of inch). I have no idea of how computations are done for svg images : external program rsvg, qt, inkscape... But what matters is that the output is accurate, or not? The SVG spec sets 1px = 1pt independent of the resolution. Then it's the job of the program, like LyX (or whatever LyX is using to output SVG) to output it correctly. And this is not done correctly. You mean 1.25px, right? I do not say I am giving a solution. I am thinking aloud. I do not even know what code (is it ours?) is to blame. Yes, I meant 1.25px. Just checked Inkscape and it converts 10pt font-size to 13.px font-size. But Libre Writer is still able to show it correctly as 12pt. So, there must be some data in the file (attached). Seems like I was wrong again. It seems like throughout: Inkscape/Libre/Firefox: 1pt = 1.333px = 1.333 LyX: 1pt = 1px = 1 This leads to the middle and right text in the attached file having different sizes in LyX while they have the same size in other applications I tested. Daniel
Re: LyX SVG output size wrong
On 20/09/2018 00:05, Jean-Marc Lasgouttes wrote: Le 19/09/2018 à 23:54, Daniel a écrit : The link you gave assumes that everything is displayed at 90dpi (which gives the 1.25 once you know that 1pt is 1/72th of inch). I have no idea of how computations are done for svg images : external program rsvg, qt, inkscape... But what matters is that the output is accurate, or not? The SVG spec sets 1px = 1pt independent of the resolution. Then it's the job of the program, like LyX (or whatever LyX is using to output SVG) to output it correctly. And this is not done correctly. You mean 1.25px, right? I do not say I am giving a solution. I am thinking aloud. I do not even know what code (is it ours?) is to blame. Yes, I meant 1.25px. Just checked Inkscape and it converts 10pt font-size to 13.px font-size. But Libre Writer is still able to show it correctly as 12pt. So, there must be some data in the file (attached). However, this too is not interpreted in LyX correctly and I have to set the scale to 75% in order to get the correct result. Daniel
Re: LyX SVG output size wrong
Le 19/09/2018 à 23:54, Daniel a écrit : The link you gave assumes that everything is displayed at 90dpi (which gives the 1.25 once you know that 1pt is 1/72th of inch). I have no idea of how computations are done for svg images : external program rsvg, qt, inkscape... But what matters is that the output is accurate, or not? The SVG spec sets 1px = 1pt independent of the resolution. Then it's the job of the program, like LyX (or whatever LyX is using to output SVG) to output it correctly. And this is not done correctly. You mean 1.25px, right? I do not say I am giving a solution. I am thinking aloud. I do not even know what code (is it ours?) is to blame. JMarc
Re: LyX SVG output size wrong
On 19/09/2018 23:07, Jean-Marc Lasgouttes wrote: Le 19/09/2018 à 22:45, Daniel a écrit : "1pt" equals "1.25px" (and therefore 1.25 user units) https://www.w3.org/TR/SVG11/coords.html#Units The basic problem is that LyX treats 1 svg pixel as 1pt rather than 0.8pt. The link you gave assumes that everything is displayed at 90dpi (which gives the 1.25 once you know that 1pt is 1/72th of inch). I have no idea of how computations are done for svg images : external program rsvg, qt, inkscape... But what matters is that the output is accurate, or not? The SVG spec sets 1px = 1pt independent of the resolution. Then it's the job of the program, like LyX (or whatever LyX is using to output SVG) to output it correctly. And this is not done correctly. Daniel
Re: LyX SVG output size wrong
Le 19/09/2018 à 22:45, Daniel a écrit : "1pt" equals "1.25px" (and therefore 1.25 user units) https://www.w3.org/TR/SVG11/coords.html#Units The basic problem is that LyX treats 1 svg pixel as 1pt rather than 0.8pt. The link you gave assumes that everything is displayed at 90dpi (which gives the 1.25 once you know that 1pt is 1/72th of inch). I have no idea of how computations are done for svg images : external program rsvg, qt, inkscape... JMarc
Re: LyX SVG output size wrong
On 19/09/2018 21:00, Daniel wrote: On 19/09/2018 18:02, Daniel wrote: On 19/09/2018 16:55, Daniel wrote: Hi, I believe LyX outputs SVGs in the wrong size. Attached is an SVG where the right text "Test" is explicitly set to 12pt. Libre Writer shows the font-size correctly (see screenshot). However, LyX seems to scale the SVG so that "12pt" matches the unit-less (or pixel) size of "12" (see screenshot). That seems incorrect. Also, is there a workaround? Okay, a work around is to set Scale graphics (%) to 75 (=1/1.3). Or it might be 80 (=1/1.25)... I am not fully sure yet Okay, it's 80, I think. This is also what the SVG specs say for the ratio between pc and pt: "1pt" equals "1.25px" (and therefore 1.25 user units) https://www.w3.org/TR/SVG11/coords.html#Units The basic problem is that LyX treats 1 svg pixel as 1pt rather than 0.8pt. Daniel
Re: LyX SVG output size wrong
On 19/09/2018 18:02, Daniel wrote: On 19/09/2018 16:55, Daniel wrote: Hi, I believe LyX outputs SVGs in the wrong size. Attached is an SVG where the right text "Test" is explicitly set to 12pt. Libre Writer shows the font-size correctly (see screenshot). However, LyX seems to scale the SVG so that "12pt" matches the unit-less (or pixel) size of "12" (see screenshot). That seems incorrect. Also, is there a workaround? Okay, a work around is to set Scale graphics (%) to 75 (=1/1.3). Or it might be 80 (=1/1.25)... I am not fully sure yet
Re: LyX SVG output size wrong
On 19/09/2018 16:55, Daniel wrote: Hi, I believe LyX outputs SVGs in the wrong size. Attached is an SVG where the right text "Test" is explicitly set to 12pt. Libre Writer shows the font-size correctly (see screenshot). However, LyX seems to scale the SVG so that "12pt" matches the unit-less (or pixel) size of "12" (see screenshot). That seems incorrect. Also, is there a workaround? Okay, a work around is to set Scale graphics (%) to 75 (=1/1.3). However, I still think the defaults in LyX are incorrect. Daniel
LyX SVG output size wrong
Hi, I believe LyX outputs SVGs in the wrong size. Attached is an SVG where the right text "Test" is explicitly set to 12pt. Libre Writer shows the font-size correctly (see screenshot). However, LyX seems to scale the SVG so that "12pt" matches the unit-less (or pixel) size of "12" (see screenshot). That seems incorrect. Also, is there a workaround? Daniel font-size-pt.odt Description: application/vnd.oasis.opendocument.text font-size-pt.lyx Description: application/lyx
