Re: Measurement precision FAIL

tomasg33705904 · ‎Jul 16, 2019

Ooook looks like the type optimized anti-aliasing was the problem. I'm exporting an artboard with a rectangle filled with the pattern. When I activate the art optimized anti-aliasing the lines disappear. I think this solves it! I have another question. This art optimized anti-aliasing only has an effect on the diagonal pattern. On the pattern I showed you in the original post the art or type anti-aliasing doesn't seem to affect at all. I mean, the other pattern looks just fine with both ant-aliasing. Is this because the diagonal pattern is one of the most difficult to get right as you said before? Thanks a lot!

tomasg33705904 · ‎Jul 16, 2019

Thank you Ton. I've seen your examples but white lines are still there when exporting. Is there something I am missing?

tomasg33705904 · ‎Jul 15, 2019

I just tried your solution of creating a horizontal or vertical line pattern and rotate it but the white lines are still there.

tomasg33705904 · ‎Jul 15, 2019

Yeah, that coud be a solution. I'm sharing the file anyway. WeTransfer https://we.tl/t-7D9hIWJQ1i Thanks

tomasg33705904 · ‎Jul 15, 2019

Ok, I see. Thank you all for your answers. Actually I still have some problems with white lines in a pattern even using round numbers in pixels. I don't know if you can help me with this. It happens with a simple pattern of diagonal lines. I made a 30x30 px form then created the pattern but I still see the white lines when I export a .JPG. Thanks a lot for your help.

tomasg33705904 · ‎Jul 12, 2019

tl;dr Nah, just kidding. Thanks for the answer, I think I understood. I will have in mind that there will always be some rounding in milimetres. Thanks!

tomasg33705904 · ‎Jul 11, 2019

I trimmed it with the shape builder tool. Anyhow I've set the Pathfinder precision to 0,001 pt just in case. I can see that the shape builder tool rounds up the decimals because, as you said, it might be working with pixels, points or inches. So, isn't there a way to work with milimeters and be precise in Illustrator? Thanks

tomasg33705904 · ‎Jul 11, 2019

Thank you for your answer. I've reset preferences by pressing Option+Command+Shift when the program starts but the problem persists. My Illustrator version is 22.1 Thank you

tomasg33705904 · ‎Jul 11, 2019

Great! Thanks for this answer! I think this will solve the white lines problem. But what about the arbitrary measure increase? Thank you

tomasg33705904 · ‎Jul 11, 2019

I don't think that's the issue because when I export a JPEG they are still visible. Thank you for your answer anyway!

tomasg33705904 · ‎Jul 10, 2019

Hi, I'm having troubles to make precise patterns because Illustrator keeps changing the measurement of my object. Actually I'm having problems with patterns because white lines appears (but that's another issue...) so in order to fix that I read that it was needed to make forms with rounded figures. So I made a 20x20 mm square with the form of my pattern. See below. (I selected them so you can see the difference) I first tried with a 20x20mm mask (the one on the left) but the white lines kept appearing. So I decided to trim it (the one on the right) but what surprised me –and here comes the issue I'm asking help for– is that illustrator changes from a 20x20 mm square to a 20,03x20,02 mm square for a reason I can't understand. See below. And that's very anoying. It's not the first time that I have this kind of issue. Does anybody know why this happens? Thanks a lot

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