Re: Plug-in recorder

Posted by João Silva on May 16, 2013; 8:21pm
URL: http://imagej.273.s1.nabble.com/Plug-in-recorder-tp5003030p5003033.html

Hello!

It sure does! Thanks a lot Rob!

By the way, I am trying to do something like this but i keep getting a null pointer exception, could you tell me why?

ImagePlus orig = IJ.getImage();
ImagePlus copy1 = orig.duplicate();
ImagePlus copy2 = orig.duplicate();

//then I use a plug-in with orig and after that I do this

 IJ.run(copy2, "Gray Morphology", "radius=20 type=circle operator=close");

And then this tells me it has a null pointer exception...

Don't know really what to do.

Best Regards,

João
________________________________________
De: ImageJ Interest Group [[hidden email]] em nome de Rob van 't Hof [[hidden email]]
Enviado: quinta-feira, 16 de Maio de 2013 20:12
Para: [hidden email]
Assunto: Re: Plug-in recorder

Hi,
you need to built up the string for passing arguments to the plugin.
SizeE is a number not a string.
code should be like:

int sizeE = 2; //sizeE is asked before since I don't want to call the plug-in I'm re-using itself
IJ.run(imp2, "Gray Morphology", "radius=" + sizeE + "type=circle operator=erode");

hope this helps,
Rob


On 16/05/2013 19:13, João Silva wrote:

> Hi everyone!
>
> I was using the plug-in recorder to save the following code:
>
> IJ.run(imp2, "Gray Morphology", "radius=2 type=circle operator=erode");
>
> I wanted to know if it is possible to do something equivalent to this:
>
>
> int sizeE = 2; //sizeE is asked before since I don't want to call the plug-in I'm re-using itself
> IJ.run(imp2, "Gray Morphology", "radius=sizeE type=circle operator=erode");
>
> I have already tried this and ImageJ pops a dialog window saying:
>
> Macro Error
>
> Numeric Vvalue expected in run() function
> Dialog box title: "Parameters"
> Key: "radius of the structure element(pixels):"
> Value or variable name: "sizeE"
>
>
> I really don't know what to do.
>
>
>
> Best Regards,
>
> João
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>

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Centre for Molecular Medicine
MRC IGMM
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United Kingdom

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email: [hidden email]
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