Re: Macro problem: number comparisons conditions in "if" statements

Posted by Michael Schmid on Jun 02, 2008; 5:19pm
URL: http://imagej.273.s1.nabble.com/Macro-problem-number-comparisons-conditions-in-if-statements-tp3696093p3696095.html

Hi Luis,

using the "Blobs (25K)" sample image with auto threshold and
"apply" I cannot reproduce the problem.

I ran "Analyze Particles" once, then your macro, and "Analyze
Particles" again. This is the result:

        Area Mean Circ Feret
Mean 337 255 0.909 22.426
SD 190.592 0 0.034 8.081
Min 1 255 0.857 1.414
Max 660 255 1 35

One possible problem:
Did you make sure that the background color is set correctly
for erasing with "Clear" ?

Michael
________________________________________________________________

On 2 Jun 2008, at 17:03, Rogerio Hein wrote:

> Dear all,
>
> I am trying to create a macro to exclude some particles based on  
> size (Feret) and shape (circularity) ranges from image stacks. I am  
> trying to  use a solution similar to that in  
> "CircularParticles.txt", as follows:
>
> for (i=0; i<nResults; i++) {
>    x = getResult('XStart', i);
>    y = getResult('YStart', i);
>    circularity = getResult('Circ.', i);
>    if (circularity<0.85) {
>        doWand(x,y);
>        run("Clear");
>    }
> }
>
> After running "Analyze Particles" command, some particles present  
> values outside the expected range. The same occurs for the  
> circularity values in the "CircularParticles.txt", from the IJ  
> website, or as presented above, some particles present circularity  
> values below 0.85, even for Blobs.gif example image. Is there a bug  
> or am I forgotting any detail? I am using version 1.41d.
> Thanks in advance.
>
> Best wishes,
>
> Rogerio Hein
>
>
> --
> Prof. Dr. Luis Rogerio de Oliveira Hein, L.D.
> Professor Adjunto Departamento de Materiais e Tecnologia
> Faculdade de Engenharia de Guaratinguetá
> UNESP - Universidade Estadual Paulista "Júlio de Mesquita Filho"
>
> Av. Ariberto Pereira da Cunha, 333
> 12516-410   Guaratinguetá, SP
> Tel.: [phone]
> Fax: [phone]
> Cel.: (12) 8125 0651
> [hidden email]