Posted by
Stein Rørvik on
URL: http://imagej.273.s1.nabble.com/Re-Using-setColor-without-an-open-image-tp5021956p5021958.html
I agree that the behaviour should not be altered if the setting is per image.
But I do not get the same behaviour, for me the setColor is global.
Also, it seems setLineWidth is reset when changing images,
but it is not remembered per image.
Test macro:
------------------------------
run("Close All");
run("Clown (14K)");
run("Clown (14K)");
selectImage(1);
setColor("yellow");
setLineWidth(3);
drawLine(100, 50, 200, 50);
selectImage(2);
setColor("cyan");
setLineWidth(6);
drawLine(100, 50, 200, 50);
selectImage(1);
drawLine(100, 100, 200, 100);
selectImage(2);
drawLine(100, 100, 200, 100);
run("Tile");
------------------------------
Stein
-----Original Message-----
From: ImageJ Interest Group <
[hidden email]> On Behalf Of Wayne Rasband
Sent: 31. mars 2019 18:26
To:
[hidden email]
Subject: Re: Using setColor without an open image
> On Mar 30, 2019, at 2:56 PM, Stein Rørvik <
[hidden email]> wrote:
>
> In a macro, you can use the functions
>
> setFont(...
> setJustification(...
> setForegroundColor(...
> setBackgroundColor(...
>
> among others without an open image.
>
> But the
>
> setColor(...
>
> function gives an error message without an open image.
>
> Same applies to
>
> setLineWidth(...
>
> Can these two restrictions be removed
I would prefer to not remove these restrictions. The color set by setColor() and line width set by setLineWidth() are associated with an image, so they are reset when you open a new image. Making them global would likely break some existing macros.
-wayne
> It often makes sense to put such initialization functions at the start of a macro when no image might have been opened or created yet.
>
> Besides, setColor and setLineWidth are not specific to the active image but a global setting as far as I can see.
>
> I tested the other set.. functions without images and they work as expected by giving missing image error message only when needed; when the settings are specific to one image.
>
> Stein
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