> Does anyone have any suggestions about how I might do this within a
> VEE program?
I'm afraid this is weak also....
Assuming the image control can select and notify VEE when a selection is made, suck it in as a bitmap (or at least know the coordinates of the selection when it is made and map them onto a source bitmap), convert to monochrome, apply "edge detection" (easy, plus matlab probably already has something for that), take the rectangle least x, least y, most x, most y and either a) fit a circle in that or b) look up the area based on the area of the rectangle.
Coordinate mapping and scale are the keys here. Most display controls do units of "Twips" (I like to say Twerps), which I think I remember is a 1440th of an inch. As for scale, you're on your own
-SHAWN-
> VEE program?
I'm afraid this is weak also....
Assuming the image control can select and notify VEE when a selection is made, suck it in as a bitmap (or at least know the coordinates of the selection when it is made and map them onto a source bitmap), convert to monochrome, apply "edge detection" (easy, plus matlab probably already has something for that), take the rectangle least x, least y, most x, most y and either a) fit a circle in that or b) look up the area based on the area of the rectangle.
Coordinate mapping and scale are the keys here. Most display controls do units of "Twips" (I like to say Twerps), which I think I remember is a 1440th of an inch. As for scale, you're on your own
-SHAWN-
I try to report communication error between PC and DMM Keithley 2000via GPIB port, if You connect an counter in Direct I/O error pin andother counter in the if conditional (asking if "A" is equal to 811)output pin, first counter stop after the error disappears but secondcounter not stop.
How can be cleaned or reset this error 811 in Direct I/O object withcommunication via GPIB port?
Best Regard,
Carlos Jimenez
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