Flat rectangular plate 6" x 12", 1/4" thick. Absolute datum point X=0.000 and Y=0.000 is at the upper left hand corner. Want to indicate the coordinates of the circle center that is to be drilled into the plate i e showing X=?.???? and Y=?.????. I have tried using the ordinate icon on the toolbar which seems to give me some numbers that are different than when I linear dimension along the X axis and then along the Y axis to the center of the circle on my drawing. Am I trying to use the wrong command and how does the command know where my absolute datum is located. Am a beginner so please help me stemp by step. Thanks!
Wouldn't it be better if the lower left hand corner of your plate was located at X=0.0000/Y=0.0000? You do want your coordinates to be positive in both directions right?
You might try switching dynamic mode OFF (DYNMODE). Enter your coordinate in this form #3,3 or whatever the coordinates are for the center point of your circle.
For ordinate dimensions to work, you'll need either set a ucs so that zero/zero is at where ever your zero point is on your workpiece, or move your workpiece so that it's datum point is at zero/zero on the world ucs.
Many years ago there was lisp floating around called "datum dims" or something to that effect. It would take care of that for you. Did a quick search but didn't find it. You might spend some time googling for it.
Attach the file here - especially with the apparent different dimensions.
Once you learn a couple if tricks there is a quick dimension ordinate tool that makes it all, well, very quick.
But it might help to demonstrate the process using YOUR actual work.
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