Random increments on transform and scale

[mxwlsn]

The problem is fairly easy to describe. Example, I have a square, it is 60px by 60px – with the "constrain height and width proportions" chain selected, if I key in a number, say, 600px; it will change to 600px by 599.998px. Pretty infuriating it introduces this [albeit tiny] inaccuracy.

[Mike_Gondek]

Turn off align to pixel grid.

You can uncheck the 3 options as shown above, or just click on the iocn to change the mode to OFF.

ALIGN TO PIXEL GRID OFF  

ALIGN TO PIXEL GRID ON  

[tromboniator]

But that error is less than one one-hundredth the thickness of a human hair!

[mxwlsn]

That's what my hairdresser said! As to why a computer program would introduce this random error, and what other errors that might cause... my hairdresser was not helpful.

[mxwlsn]

Thanks Mike, this didn't stop the error though.

[Jacob Bugge]

Max,

Is it also happening if you set the X  and Y values to whole numbers (integers) such as X = Y = 0 for one of the corners (see the Reference Points in the Transform palette)?

[mxwlsn]

Jacob, thanks for your question but I don't understand. I don't know which Transform palette reference points you're referring to.

[mxwlsn]

Here are a couple of screengrabs to show the issue.

What I can say is that it doesn't happen when transforming a simple square.

[mxwlsn]

Here are a couple of screengrabs to show the issue.

What I can say is that it doesn't happen when transforming a simple square.

[Jacob Bugge]

Max,

You have just shown the Transform palette in your screenshots. The Reference Points are the nine small squares to the left with the centre one selected; you can select the corners and the centres of the sides instead.

With en even number like 450px, the X and Y will be integers in all cases if the centre one is; with an odd number like 45px, the corner one will have non integer X and Y values ending in .5.

Your centre X and Y values are non integer (X = 1040.607 and Y = 467.508).

What happens if you start with the little version W = H = 45px, choose the top left Reference Point, change to X = 1020 and Y = 450, and then try to scale up to 450px?

[mxwlsn]

Still the issue. Some more info; if I change the width [enter 450px into the width box] I get 450.002px height – if I change the height to 450px instead, I get 449.998px width.

[Ton Frederiks]

Maybe your original size was not exactly what was shown.

So instead of 45 px X 45 px it was actually 45 X 45,0001 px

That would show as a rounded 45px, but the 45,0001 value would be used when transformed.

You can try this: Create a rectangle of X:45 and Y:45,0001 px W:45 and H:45,0001 px 

You will see 45 X 45 in the Transform panel.

Change the W 45 to 450 and watch the H value change to 450,001 

I edited the reply change X and Y to W and H

[mxwlsn]

Ton, that's the answer – thanks. There is a hundredth of a pixels mistake in the artwork. Give that illustrator could show a shape is actually 45px by 45.0001px, why doesn't it just do that?

[Ton Frederiks]

Max, you can vote and comment here for more consistent display of decimals in Illustrator and see a comment from Neeraj Nandkeolyar, product manager Illlustrator.

https://illustrator.uservoice.com/forums/333657-illustrator-feature-requests/suggestions/32532658-to...