Re: Progress bar during resizing

Posted by Edoukoua Konin on Apr 16, 2015; 1:06pm
URL: http://imagej.273.s1.nabble.com/Progress-bar-during-resizing-tp5012480p5012506.html

hello, i have needs for assistance,  I have a particle that is trapped and I want to extract the different positions, then remove the noises. KONIN EDOUKOUA JEAN MICHEL
DOCTORANT
Université Nangui AbrogouaInstitut National
Polytechnique de Yamoussoukro
[phone]/ [phone]+225 21276241


     Le Mercredi 15 avril 2015 17h24, Michael Schmid <[hidden email]> a écrit :
   

 Hi Nico,

sorry, you can't get the progress of a resize operation from outside the ImageProcessor method that does the job.
One could have a parallel thread with that shows just some progress bar with arbitrary speed, and terminates if the operation is done, but a solution with macros only will be a rather tricky hack.

It is easier with a plugin than with a macro for the progress bar, because then one could stop it via a 'call' command. I have written a quick and dirty one, below. After 'Compile&Run', you have to do "Refresh Menus" to make it appear somewhere in the Plugins menu, then you can start it in a separate thread with doCommand.

Michael
________________________________________________________________

import ij.*;
import ij.plugin.PlugIn;

/** Displays a progress bar with fixed speed.
 *  It can be started in a separate thread from a macro with
 *      doCommand("Asynchronous Progress Bar");
 *  To make it disappear, use the following macro command:
 *      call("Asynchronous_Progress_Bar.stop");
 *  To set the maximum time to 50 sec,
 *      call("Asynchronous_Progress_Bar.setMaxTime", 50);
 *
 * 2014-04-15 Michael Schmid
 */
public class Asynchronous_Progress_Bar implements PlugIn {
    static boolean stop;
    static double maxTime = 100; //default 100 sec

    public void run(String arg)  {
        stop = false;
        for (int i=0; i<99; i++) {
            if (stop) {
                IJ.showProgress(1.0);
                break;
            }
            IJ.showProgress(i, 100);
            IJ.wait((int)(10*maxTime));
        }
    }

    public static void setMaxTime(String timeString) {
        try {
            maxTime = Double.parseDouble(timeString);
        } catch (Exception e) {}
    }

    public static void stop() {
        stop = true;
        IJ.showProgress(1.0);
    }
}________________________________________________________________

On Apr 15, 2015, at 18:10, Nicolas Brouilly wrote:

> Hi Michael !
>
> Thank you for your clarifications !
>
> Is there any chance that, in a macro, one can display a "progress bar" in the log window using parallel threads ? Or any other way to get an idea about the progress of a resizing step in a macro ?
>
> Thanks !
>
> Nico
>
> On 15/04/2015 17:13, Michael Schmid wrote:
>> Hi Nico,
>>
>> ImageJ shows the progress bar only for some operations, mainly for those that are slow with more "typical" image sizes (0.1-10 Mpixels). Your output image has 100 Mpxl.
>>
>> Resizing is done at a rather low level (ImageProcessor) and it is just a small part of the operation in several other commands (e.g. "Make Montage"), so adding a progress bar for resizing would give a meaningless (or flickering) progress bar for other operations that use resizing. So ImageJ just shows a status message when resizing, counting the images that have to be resized (for the case that a stack is resized). Unfortunately, that status message goes away as soon as the mouse is moved over an image, it yields for the coordinates & value readout.
>>
>> Michael
>> ________________________________________________________________
>> On Apr 15, 2015, at 16:17, Nicolas Brouilly wrote:
>>
>>> Dear all,
>>>
>>> How can I get the progress bar to appear during a resizing manipulation ?
>>>
>>> Let say that you have a 1 000 x 1 000 px image and want to resize it to 10 000 x 10 000 px. It takes more than a second (20 seconds on my system), though the progress bar does not appear.
>>>
>>> Is there a limited list of functions for which the progress bar is supposed to appear ?
>>>
>>> Thanks !
>>>
>>> Nico
>> --
>> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>
> --
>
> Nicolas BROUILLY, PhD
>
> Zerial lab,
>
> Max Planck Institute of Molecular
>
> Cell Biology and Genetics
>
> Pfotenhauerstr. 108
>
> 01307 Dresden
>
> phone: [phone]
>
> e-mail: [hidden email]
>
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html

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