Print large image across multiple sheets
I have a largish (~12000 pixels square) image that I want to print at a defined scale across multiple sheets. I'm comfortable using Image Magick to split the image into appropriately-sized chunks, but am at a bit of a loss when it comes to forcing 300dpi at printing time. It would be wonderful if someone has already produced a tool that takes an image and paginates it into, say, PDFs at a defined resolution. My google-fu has failed to find such a tool. Suggestions? Cheers, Roy.
Re: Print large image across multiple sheets
On Sun 28 Mar 2010 19:15:06 NZDT +1300, Roy Britten wrote: I have a largish (~12000 pixels square) image that I want to print at a defined scale across multiple sheets. I'm comfortable using Image Magick to split the image into appropriately-sized chunks, but am at a bit of a loss when it comes to forcing 300dpi at printing time. You are looking for the netpbm package. The command arguments are a bit of PITA though, you get the distinct impression it was designed by Americans. You may create PostScript first, which doesn't matter because you can convert that to PDF easily. Volker -- Volker Kuhlmann http://volker.dnsalias.net/ Please do not CC list postings to me.
Re: Print large image across multiple sheets
On 28 March 2010 19:45, Volker Kuhlmann list0...@paradise.net.nz wrote: On Sun 28 Mar 2010 19:15:06 NZDT +1300, Roy Britten wrote: I have a largish (~12000 pixels square) image that I want to print at a defined scale across multiple sheets. I'm comfortable using Image Magick to split the image into appropriately-sized chunks, but am at a bit of a loss when it comes to forcing 300dpi at printing time. You are looking for the netpbm package. The command arguments are a bit of PITA though, you get the distinct impression it was designed by Americans. You may create PostScript first, which doesn't matter because you can convert that to PDF easily. Volker -- Volker Kuhlmann http://volker.dnsalias.net/ Please do not CC list postings to me. Also http://home.clara.net/nox/software/epssplit/ps_poster.tar.gz http://home.clara.net/nox/software/epssplit/poster.tar.gz -- Sincerely etc. Christopher Sawtell
Re: Print large image across multiple sheets
On Sun, Mar 28, 2010 at 7:15 PM, Roy Britten roy.brit...@gmail.com wrote: I have a largish (~12000 pixels square) image that I want to print at ... It would be wonderful if someone has already produced a tool that takes an image and paginates it into, say, PDFs at a defined resolution. My google-fu has failed to find such a tool. Suggestions? As an online service, try this wonderful site :- http://homokaasu.org/rasterbator/ -jim
Re: Print large image across multiple sheets
On 28 March 2010 20:12, Jim Cheetham j...@gonzul.net wrote: On Sun, Mar 28, 2010 at 7:15 PM, Roy Britten roy.brit...@gmail.com wrote: I have a largish (~12000 pixels square) image that I want to print at ... It would be wonderful if someone has already produced a tool that takes an image and paginates it into, say, PDFs at a defined resolution. My google-fu has failed to find such a tool. Suggestions? As an online service, try this wonderful site :- http://homokaasu.org/rasterbator/ -jim Thanks for the pointer. Unfortunately I suspect that uploading my 67MB file may take a little longer than I've the patience for, or the web server's timeout would allow.
Re: Print large image across multiple sheets
On 28 March 2010 19:45, Volker Kuhlmann list0...@paradise.net.nz wrote: On Sun 28 Mar 2010 19:15:06 NZDT +1300, Roy Britten wrote: I have a largish (~12000 pixels square) image that I want to print at a defined scale across multiple sheets. I'm comfortable using Image Magick to split the image into appropriately-sized chunks, but am at a bit of a loss when it comes to forcing 300dpi at printing time. You are looking for the netpbm package. The command arguments are a bit of PITA though, you get the distinct impression it was designed by Americans. You may create PostScript first, which doesn't matter because you can convert that to PDF easily. Cheers. I'll have a hunt through the documentation for the switches for forcing the correct resolution.
Re: Print large image across multiple sheets
On 28 March 2010 19:57, Christopher Sawtell csawt...@gmail.com wrote: http://home.clara.net/nox/software/epssplit/ps_poster.tar.gz http://home.clara.net/nox/software/epssplit/poster.tar.gz Cheers Chris. I'm still working on creating an EPS at the correct resolution, but if I can crack that nut then poster should do the trick nicely.
Re: Print large image across multiple sheets
On Sun, Mar 28, 2010 at 9:07 PM, Roy Britten roy.brit...@gmail.com wrote: On 28 March 2010 20:12, Jim Cheetham j...@gonzul.net wrote: http://homokaasu.org/rasterbator/ Thanks for the pointer. Unfortunately I suspect that uploading my 67MB It's downloadable and installable. It's written for .Net 1.1, and is reported to run OK on Ubuntu Feisty, at least ... http://arje.net/rasterbator_on_mac However, it's probably not what you really want anyway, as it really wants to re-render your picture, and I gather you already have the detail you require and are just trying to print it out :-) -jim
Re: Print large image across multiple sheets
On Sun, 2010-03-28 at 19:15 +1300, Roy Britten wrote: I have a largish (~12000 pixels square) image that I want to print at a defined scale across multiple sheets. I'm comfortable using Image Magick to split the image into appropriately-sized chunks, but am at a bit of a loss when it comes to forcing 300dpi at printing time. It would be wonderful if someone has already produced a tool that takes an image and paginates it into, say, PDFs at a defined resolution. My google-fu has failed to find such a tool. Suggestions? Cheers, Roy. Can't you do this with postscript... - anymap - ps - play with ghostscript / output to lpr? eg pngtopnm myimage.png | pnmtops -dpi 300 myimage.ps -- Steve Holdoway st...@greengecko.co.nz http://www.greengecko.co.nz MSN: st...@greengecko.co.nz GPG Fingerprint = B337 828D 03E1 4F11 CB90 853C C8AB AF04 EF68 52E0 signature.asc Description: This is a digitally signed message part
Old SCSI Hard-disk wanted
Hi, Does anyone have an older SCSI hard disk (SCSI-2 preferrably). One of the ones with a 50-way IDC connector (Similar to the 40-way parallel IDE connectors prior to SATA). I'm more than happy to pay for it. I've tried to find them on trademe, but they are just too old for people to bother I think. On a linux related front, we need this to test our Linux based SCSI device. Please contact me off-list. Regards, Andre
Re: Ditto: OT: Free external 56k modem
On 17/03/10 11:59, Chris Downie wrote: I too have a modem free to a good home. It's a Dynalink e-modem (1456VQE-C). Complete, in original box. Please contact me off-list if you want it. Cheers, Chris Hi - any modems still available? I know someone trying to get a winmodem running and they are having problems with drivers etc. If anyone has a spare modem that runs on Ubuntu, I can find it a good home. Don BTW - no idea whats wrong. -- __ Don Robertson Information and Communications Technology d...@robertson.net.nz www.robertson.net.nz 021 294 1452 03 322 8172
Re: Reducing log file noise
Tom Munro Glass wrote, On 29/03/10 11:11: Mar 28 22:56:50 localhost init: Id ACM0 respawning too fast: disabled for 5 minutes Your problem is that init is bringing up the process and failing. Not that its logging too much. -- Craig Falconer
Re: Reducing log file noise
On Mon, 29 Mar 2010 11:19:33 Craig Falconer wrote: Tom Munro Glass wrote, On 29/03/10 11:11: Mar 28 22:56:50 localhost init: Id ACM0 respawning too fast: disabled for 5 minutes Your problem is that init is bringing up the process and failing. Not that its logging too much. Thanks Craig - I figured that was the problem. Is there a way of making init quieter? Associated with this, is there a way of changing the disabled period from 5 minutes? Tom
Re: Reducing log file noise
I'd suggest using a udev rule that runs simple script to enable/disable your tty. All you'd need to do is match your modem in a udev rule and call a script to change your inittab. That way it only runs if/when the modem is plugged-in. Cheers, sV On 29 March 2010 11:10, Tom Munro Glass gen...@tmgcon.com wrote: A client is deploying several CentOS machines to remote sites, some of these have broadband access but some use dial-up for remote administration. Part of the standard configuration is to install a USB modem driver and to add the following line to /etc/inittab: ACM0:2345:respawn:/sbin/mgetty -x 0 -n 6 -D ttyACM0 to allow us to dial into the machine. This is fine *IF* the USB modem is physically installed and being used, but on sites using broadband where a modem is not usually installed /var/log/messages fills up with a large amount of the following: Mar 28 22:56:50 localhost mgetty[4828]: mod: cannot open line /dev/ttyACM0: Input/output error Mar 28 22:56:50 localhost mgetty[4828]: open device /dev/ttyACM0 failed: Input/output error Mar 28 22:56:50 localhost mgetty[4828]: cannot get terminal line dev=ttyACM0, exiting: Input/output error Mar 28 22:56:50 localhost init: Id ACM0 respawning too fast: disabled for 5 minutes Similar messages are also written to /var/log/mgetty.log.ttyACM0. You might think the obvious solution is to not set up the modem if it's not being used, but this isn't what the client wants. The CentOS machine is headless, and in the event of a broadband failure we need an engineer to be able to simply plug in a modem to give us remote access to it. So, is there some way of reducing the amount of messages ending up in the log files? I have already added '-x 0' to minimise output from mgetty but the messages shown above are still getting through. Tom Munro Glass
Re: Reducing log file noise
Tom Munro Glass wrote, On 29/03/10 11:24: On Mon, 29 Mar 2010 11:19:33 Craig Falconer wrote: Tom Munro Glass wrote, On 29/03/10 11:11: Mar 28 22:56:50 localhost init: Id ACM0 respawning too fast: disabled for 5 minutes Your problem is that init is bringing up the process and failing. Not that its logging too much. Thanks Craig - I figured that was the problem. Is there a way of making init quieter? Associated with this, is there a way of changing the disabled period from 5 minutes? I think you're patching the symptom, not the cause. init's job to to make sure certain processes are running. Perhaps udev is your answer instead of init - if the modem is found then run something, otherwise don't. -- Craig Falconer
Re: Reducing log file noise
On Mon, 29 Mar 2010 11:25:12 Solor Vox wrote: I'd suggest using a udev rule that runs simple script to enable/disable your tty. All you'd need to do is match your modem in a udev rule and call a script to change your inittab. That way it only runs if/when the modem is plugged-in. Cheers, sV This sounds like a good solution - could you possibly give me a pointer on how to write the udev rule, because I haven't done this before? When the modem is plugged in the device is /dev/ttyACM0, and the driver module is cdc_acm. Will this run as root, because the script would need to patch /etc/inittab and then call 'telinit q'? Tom
Re: Reducing log file noise
On Mon, 2010-03-29 at 11:39 +1300, Tom Munro Glass wrote: On Mon, 29 Mar 2010 11:25:12 Solor Vox wrote: I'd suggest using a udev rule that runs simple script to enable/disable your tty. All you'd need to do is match your modem in a udev rule and call a script to change your inittab. That way it only runs if/when the modem is plugged-in. Cheers, sV This sounds like a good solution - could you possibly give me a pointer on how to write the udev rule, because I haven't done this before? When the modem is plugged in the device is /dev/ttyACM0, and the driver module is cdc_acm. You need the device ID - lsusb to list. http://www.reactivated.net/writing_udev_rules.html Will this run as root, because the script would need to patch /etc/inittab and then call 'telinit q'? No... the udev rule is instead of, not to enable inittab. If you really need the always up testing functionality, then maybe look at DJB's daemon tools. Tom I can't believe I've just recommended some of Dan's software. Off for a lie down! Cheers, Steve -- Steve Holdoway st...@greengecko.co.nz http://www.greengecko.co.nz MSN: st...@greengecko.co.nz GPG Fingerprint = B337 828D 03E1 4F11 CB90 853C C8AB AF04 EF68 52E0 signature.asc Description: This is a digitally signed message part
Re: Reducing log file noise
You need the device ID - lsusb to list. http://www.reactivated.net/writing_udev_rules.html Will this run as root, because the script would need to patch /etc/inittab and then call 'telinit q'? No... the udev rule is instead of, not to enable inittab. If you really need the always up testing functionality, then maybe look at DJB's daemon tools. Tom I can't believe I've just recommended some of Dan's software. Off for a lie down! Cheers, Steve Thanks for the link Steve, and I think I now understand how to write the udev rule with the RUN+= assignment. What I don't understand is what to put in the script that I call since it has to return very quickly or detach itself. Do I just need to launch mgetty if the udev ACTION=add or kill mgetty if ACTION=remove? Presumably mgetty will still call ppp once a call comes in, and the rest of the dial-up settings remain the same. Tom
Re: Print large image across multiple sheets
On Sun, 2010-03-28 at 19:15 +1300, Roy Britten wrote: I have a largish (~12000 pixels square) image that I want to print at a defined scale across multiple sheets. I'm comfortable using Image Magick to split the image into appropriately-sized chunks, but am at a bit of a loss when it comes to forcing 300dpi at printing time. It would be wonderful if someone has already produced a tool that takes an image and paginates it into, say, PDFs at a defined resolution. My google-fu has failed to find such a tool. Suggestions? Cheers, Roy. In ImageMagick, the command-line parameter to set the image resolution is 'density'; this inserts the desired image resolution (in dots per inch or whatever) into the file -- provided that the file supports the idea of image resolution in dpi. JPEG files do. The program 'poster' takes a PS file and splits it up into bits. I use it for printing a PCB component overlay at up to 8x full size to make it easier to identify those tiny surface mount resistor. * pdftops file.pdf file.ps * poster -v -i410x220+10,95mm -ma3 -c2% -s2 -o file-2x.ps * ps2pdf file-2x.ps file-2x.pdf Note that this starts from a PDF file, so you should use another filter to convert your input to a PS file. These command line option mean: * -i: the size of the bounding box of the input image. I wanted to enlarge only a portion of the image * -m: the size of the output media * -c: the amount of overlap (cut size) * -s: linear scaling size * -o: output file name Stephen Irons
Re: Print large image across multiple sheets
On 29 March 2010 09:18, Jim Cheetham j...@gonzul.net wrote: On Sun, Mar 28, 2010 at 9:07 PM, Roy Britten roy.brit...@gmail.com wrote: On 28 March 2010 20:12, Jim Cheetham j...@gonzul.net wrote: http://homokaasu.org/rasterbator/ Thanks for the pointer. Unfortunately I suspect that uploading my 67MB It's downloadable and installable. Even the downloadable version couldn't cope with my (large) image. Couldn't see an option to force DPI either. Thanks for the pointer though. Cheers, Roy.
Re: Old SCSI Hard-disk wanted
Molten Media On 29 March 2010 10:09, Andre Renaud an...@bluewatersys.com wrote: Hi, Does anyone have an older SCSI hard disk (SCSI-2 preferrably). One of the ones with a 50-way IDC connector (Similar to the 40-way parallel IDE connectors prior to SATA). I'm more than happy to pay for it. I've tried to find them on trademe, but they are just too old for people to bother I think. On a linux related front, we need this to test our Linux based SCSI device. Please contact me off-list. Regards, Andre -- Sincerely etc. Christopher Sawtell
