ImageJ - Re: x y coords of anchor points on segmented line

ImageJ

Re: x y coords of anchor points on segmented line

Posted by Volker Baecker on Apr 02, 2015; 12:07pm
URL: http://imagej.273.s1.nabble.com/x-y-coords-of-anchor-points-on-segmented-line-tp5012312p5012321.html

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Tobias
does the macro below do what you want?

Roi.getSplineAnchors(xx, yy);
height = getHeight();
print("\\Clear");
result = "";
for(i=0; i<xx.length; i++) {
result += "" + xx[i] + " " + (height - yy[i]);
if (i<xx.length - 1) result += ", ";
}
print(result);

Volker

Tobias Baskin:

> Volker, Thank you again. I downloaded the latest version and now
> the ROI.getSplineAnchors runs. Yay! (in the latest version, the
> ROI.getCoordinates returns points every pixel, not just the
> anchors). But it happens that the software that I feed the
> coordinates into needs the y-axis coordinate inverted, and the
> returned y-values are not inverted. I have the 'invert Y
> coordinate' checked in the set measurements options but I suppose
> that the ROI command is not a measure command and hence oblivious
> to that. Is there a command to add to the macro that will invert
> the y values? Also, is there syntax to have the data come out as x
> y, x y, x y, rather than x x x, y y y? That would be quite helpful.
> I totally appreciate your time here! Many thanks, Tobias
>
>