[ImageJ-devel] get current image when implementing a Command interface

[Curtis Rueden]

Hi Carnë,

> I open the sample image "blobs" and the plugin will print "8-bit"
> (expected). Then I open the sample "CT" and it prints "16-bit"
> (expected). I then select the blobs image, run it again but get
> "16-bit"

This is a bug in the ImageJ2 legacy layer, responsible for keeping the
ImageJ2 data structures in sync with ImageJ 1.x. Could you please file an
issue at https://github.com/imagej/imagej-legacy/issues ?

Thank you,
Curtis


On Thu, Aug 14, 2014 at 12:18 PM, Carnë Draug <carandraug+dev at gmail.com>
wrote:

> Hi
>
> I'm trying to write an ImageJ plugin but I'm failing at the most basic
> step which I thought would be getting the current image (last selected
> image). I am using the @Parameter annotation to get a Dataset and
> implementing a Command interface but I'm unsure of what it's
> happening. Using:
>
>   @Parameter
>   private Dataset dataset;
>
> as suggested on the tutorials [1], seems to use what the image was
> when opened. After reading the javadocs [2], I have tried to set
> persist to false but go no change.
>
> Please, consider my very small case which should simply print the
> image data type [3] (it requires closing the text window after each
> call). I open the sample image "blobs" and the plugin will print
> "8-bit" (expected). Then I open the sample "CT" and it prints "16-bit"
> (expected). I then select the blobs image, run it again but get
> "16-bit" (that was a surprise, I guess it's choosing the last opened
> image). So I change the CT to 8-bit using "Edit > Type", run the
> plugin again but still get back "16-bit" (uh! I have no idea of what's
> going on).
>
> I'm probably doing something very stupid as I'm still getting to grips
> with java. Could anyone explain to me how to get the current image? I
> did found the ImageJ1 getCurrentImage() method but I'm trying to use
> ImgLib2 to later on get a RandomAccessible and implement some
> N-dimensional algorithms.
>
> Thank you,
> Carnë
>
> [1]
> https://github.com/imagej/imagej-tutorials/blob/master/simple-commands/src/main/java/ComputeStats.java
> [2]
> http://jenkins.imagej.net/job/SciJava-common-javadoc/javadoc/org/scijava/plugin/Parameter.html
> [3] http://pastebin.com/ZVt1YsJ0
>
> _______________________________________________
> ImageJ-devel mailing list
> ImageJ-devel at imagej.net
> http://imagej.net/mailman/listinfo/imagej-devel
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://imagej.net/pipermail/imagej-devel/attachments/20140814/da00b10c/attachment.html>