Points/Pixels?

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Fri, 08/01/2008 - 11:48 am

Hi,

I'm trying to export a .bmp image with a specific width and height, measured in pixels.

I've noticed that much of the Igor image parameters are measured in "points". Is this equivalent to pixels?

I'm using newLayout to create my layout, appendLayoutObject to insert my graph into the new layout, and then savePict to save the image.

Thanks for your help
gseaborn wrote:

I've noticed that much of the Igor image parameters are measured in "points". Is this equivalent to pixels?


Points and Pixels are only the same when the ScreenResolution is 72, as typically occurs on a MacOS system. Otherwise, the conversion is ...

Points = Pixels*72/ScreenResolution

To test your system, type "print ScreenResolution" on the command line.

Further discussion of this is in section III-389 of the manual.

--
J. J. Weimer
Chemistry / Chemical & Materials Engineering, UAH

August 1, 2008 at 12:13 pm - Permalink