Hello everyone,

I am fairly new to Inkscape and use it to post process some test plots (confusion matrices).

I generate my plots with python scripts as PDF files. When I open those, everything looks fine in Inkscape, I edit them and save them as Inkscape SVG files. Loading the SVG files again works too. But when I save the edited plots again as PDF, suddenly the matrix cells are blurred. What am I missing? I fiddled around with the export settings, but I don't see what causes the behaviour.




Cheers,
dersmon

That's because the image is really tiny - it has only 32x32 px, and Inkscape tries to 'enlarge' it, without making it look blocky. This way of rendering also transfers to exported pdfs.

You can either:
- right-click on the image, select 'object properties', then select optimizeSpeed in the Image Rendering dropdown, to make Inkscape enlarge the image in 'blocky' and not 'beautiful' kind of way,
- or you can open the bitmap image with a graphics editor, and enlarge it to be large enough for a pdf of the size you need (at least 600 px per inch).

Hey Moini,

I have no Image Rendering dropdown when opening 'object properties'. I just can assign an ID, label, title and description. Or did you refer to something else?

EDIT: To which bitmap image are you referring? Those are both vector graphics, right?

Cheers,
Simon

No, the colored squares are all single pixels in a 32x32 px raster image. The image rendering dropdown is only available when you select an image, so make sure you have the corresponding object selected. (Use Ctrl+click to select any object, regardless of grouping).

Check the status line at the bottom to see what kind of object you have selected.

Ah, I see. I now got: "Image 32x32: embedded; masked in layer confusion. ...". But right clicking -> Object properties still does not have any Image rendering dropdown.

What's your Inkscape version?

Ok, it's version Inkscape 0.48.4 r9939. Seems like I am not really up to date...

Hi.

Check this.

If you're on Ubuntu, which still ships with an outdated version, unfortunately, you can use the ppa to get the current version:
https://launchpad.net/~inkscape.dev/+ar ... ntu/stable

Thanks Lazur, I will have a look at it.

I installed the 0.9 Version and now Moini's initial fix works. Thank you both!