Allow users to set direction for X and Y axes
Several versions ago Adobe decided to flip Y-axis, so origin now is placed TOP-left instead of BOTTOM-left, as it was before.
They say it was done for compatibility with Photoshop and InDesign, which both have y-axis going down.
I think that breaking people's workflow, deciding only ONE direction is right, was wrong.
InDesign is a publishing software, it works with a flow. I don't know anybody who reads from bottom to up (RTL — yes). When you move an object there, you don't move it up, you move it backwards
Photoshop is raster graphics editor, it works with a readable grid of pixels, which are written from top left (we see it every time when images load slow in browsers). Using Photoshop since version 5 I never experienced any trouble with axis going down, because it just never mattered! I retouch photos mostly. People, who uses it for drawing web-design (!) are still OK, because web pages go down. Anyway, PS even hasn't precise move dialogue controls.
And of course, the fact y-axises go one direction, is just a coincidence (when there is only two variants for y-axis to go — it's highly occasional) — because these two programs care for different fields.
But Illustrator is about vectors.
Y-axis goes up in Cartesian coordinate system.
We move objects up meaning up here.
It was a consistency for the sake of consistency.
It was convenient for devs and not end users.
It was a mistake to do.
Adobe should have asked users to vote about denying common sense.
And Adobe should never ever ever had not given users ability to flip it.
In fact, there IS a way to make y-axis to go down, as it was before: you have to manually set flags in prefs file:
BUT it causes Move dialogue to be broken (I also have this bug reported). And since there is such an ability and I can flip it in Prefs file — I will fight for an ability to work fully (the worse thing Adobe can do now — is to kill this opportunity).
I don't ask for ruler origin to be changed to bottom left by DEFAULT, NO, Adobe already had given us an opportunity to change this by editing flags! The ideal outcome would be just a switch in Preferences within AI (and a bugfix for Move dialogue that is set upon existing and approved behaviour).
I know quite a lot of highly valuable people from Adobe forums who still votes for y-axis go up:
CarlosCanto (he even wrote a script to undo your unexpected making, https://forums.adobe.com/message/3859338)
JETalmage (you should have seen this post back in 2009! https://forums.adobe.com/thread/497089)
Jacob Bugge and all other people who agree with them in comments.
Nobody among my colleagues I know personally likes this. And only two of them having spoken about it at forums. Imagine how many just cry silently.
Xara allows to flip axes.
Canvas allows to.
Inkscape seems to be able too.
Affinity can't, but YET.
Jim Fuite commented
I am a math and physics guy using Illustrator to design shingle patterns for my house. A Cartesian coordinate option please.
I'm using Illustrator for a cabinet making design project. Having the y axis on a negative scale is hideous.
Those in graphics design generally use this method of working from the upper left and going positive down and to the right. Previous versions of Illustrator allowed it to go the opposite direction (the company I work for has Illustrator versions going back to CS2, and I think possible AI8). Out computers use multiple different versions, mainly because as long as we save it as an AI8 file we can get what information we need from it with some other in house built programs. It just sucks when we go from one computer to another and have to flip how we think about the Y-Axis. Would rather have that be a preference, as you say
Two years later and it's still BELOW the Y -axis 0. This is different from all the other CAD, CAM, 3D programs I use. I don't see how it's an advantage in InDesign either.
Please add this back
This feature would be invaluable to me. I did the plist flip many moons ago after Adobe inverted it, and now there is no way to undo it, and successive move commands on the y axis result in a reversal of movement ie: first movement set to negative will be negative, a successive move command in the pos direction of the identical distance will still result in a negative movement. Now there is no way to fix this without tossing my plist which of course is not an option as I have been nursing it for 15yrs+