saving a high res tiff graphics

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Fri, 09/11/2009 - 10:07 am

Hello all,

I'm a long time user of igor 5.05a. I am trying to save a tiff file with 1200 dpi. It is not working. On XP under VMWare Fusion, depending on the saving option, igor sometimes crash and sometimes report Windows os error 1450. On Vista 64 bit, igor just crashes at times. Other times, it saves but I get about 500MB file with completely blank image. I have tried other options like 8xscreen or 5xscreen or 1000 dpi etc. But unless I go very low res, it's very problematic.

Mr. Wu
You're using a fairly old version of Igor, so it's possible that this bug has been fixed in a more recent version. You can download a trial version of Igor 6.11, the current version, from our web page at http://www.wavemetrics.com/support/demos.htm

This demo is fully functional for 30 days, after which it reverts to demo mode.

If you still get this crash in the latest version, please let us know. It is also helpful if you copy here the exact commands you are using (or the command Igor creates on the command line when you save an image) so that we can try to reproduce the problem.

September 11, 2009 at 11:18 am - Permalink

I downloaded latest version on Mac and I can confirm that it works better than before but problems remain.

I can save it in 8xscreen res tif file and it creates ~ 300MB file which Preview can read. Windows photo gallery recognizes the file and display it right.

When I save it as other dpi -> 1200, it makes 900MB file which on Mac, Preview does not even recognize it as something it can read. When I d-clicked on it it get a prompt from Igor. I never knew igor can load/display an image file but I always thought it as a missing feature. Anyhow, Igor does not display that 900MB file at all. Moreover windows photogallery does not know what to do with that 900MB tif file.

Here is the command

•SavePICT/C=2/E=-7/RES=1200 as "testa"


On this new version I also got the same "syntax" error with 5.05A the other day but I can't reproduce it. Perhaps I got that error with a different experiment file.

September 15, 2009 at 09:31 am - Permalink

It's difficult for us to figure out what is happening without being able to reproduce what you are doing. The best think you could do is to send your experiment file (but of course not the TIFF file itself) to us at support@wavemetrics.com. Please also send detailed instructions on what graph you are trying to save and the exact command you're using to give the problematic result. That way we can try doing the same thing here and hopefully figure out the problem.

You haven't said why you need to create a TIFF file at 12 time screen resolution, but I'm guessing you are doing so for a publication or something similar. If you haven't already, you might consider whether exporting as a .pdf file would be appropriate. Furthermore, your use of the /C=2 flag means that you're saving it as a CMYK file. If this is for publication it might be better if you saved the image as a RGB image (/C=1) and let whomever is using your image, such as the publisher, do the conversion into CMYK.

September 15, 2009 at 11:16 am - Permalink