Re: Macro to analyze periphery rectangular areas of rotated rectangles

Posted by Roger Chang-3 on Aug 07, 2008; 9:13pm
URL: http://imagej.273.s1.nabble.com/Macro-to-analyze-periphery-rectangular-areas-of-rotated-rectangles-tp3695435p3695439.html

Wow!
Thanks Wayne and Volker for the string concatenation tip! I did not think
that was even possible. That tip should help me tremendously in my future
programming ventures (I am really only a beginner programmer).

-Roger Chang
Washington University in St. Louis BME Department: Efimov Lab

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> Hello Roger,
> you can use string concatenation (the number is converted automatically
> to a string).
>
> angle = 12;
> run("Rotate...", "angle=" + angle);
>
> Volker
>
> Roger Chang a écrit :
> | Hi Volker,
> | I tried to use the run("Rotate...", "angle=33"); function, but I want
> the
> | image selection to rotate a value incorporated in a variable. Do you
> know
> | if instead it can rotate a value designated by such a variable?
> |
> | Thanks!
> | -Roger Chang
> | Washington University in St. Louis BME Department: Efimov Lab
> | Hello Roger,
> | there is a rotate command for rois in ImageJ. You can find it in the
> | menu Edit>Selection>Rotate... The macro code to run it is
> | run("Rotate...", "angle=33");
> |
> | This command calls a macro RotateSelection.txt that you can find in the
> | ij.jar.
> |
> | I'm using ImageJ 1.41b but according to
> | http://rsbweb.nih.gov/ij/docs/all-notes.html
> | the rotate command for selections was introduced in 1.35b
> |
> | Best regards,
> | Volker Baecker
> |
> | Roger Chang a écrit :
> | | Dear ImageJ Listserv members,
> | | I am in the middle of writing an ImageJ macro to analyze the area in
> | rotated
> | | image selection rectangles' periphery rectangles. What I mean by
> | periphery
> | | rectangles is taking each of the four sides of the original rotated
> | | rectangle selection and creating four smaller, periphery rectangles
> that
> | | "surround" the original rotated rectangle on all four sides. However,
> | these
> | | periphery rectangles do not extend out, but extend into the original
> | rotated
> | | rectangle selection area.
> | |
> | | I am having a lot of trouble calculating and defining these periphery
> | | rectangles with trignometric calculations. If the angle is too close
> to
> | 90
> | | deg. or 0 deg., the periphery rectangles of the longer sides become
> | shorter
> | | or longer than the original rectangles.
> | |
> | | Do any of you have any other suggestions of another approach to define
> | these
> | | four rotated, periphery rectangles that surround the original rotated
> | | rectangle? Unfortunately, I have not found any mention of a rotate
> | function
> | | for image selections in the ImageJ Listserv or in the macro function
> | list;
> | | although there are many rotate functions for an entire image.
> | |
> | | If any of my explanation was not clear, please feel free to reply for
> a
> | | clarification.
> | |
> | | Yours truly,
> | | Roger Chang
> | | Washington University in St. Louis BME Department: Efimov Lab
> | |
> |>
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