MATLAB: How to get the pre-2014b behavior of hold on

2014bgraphicsMATLABr2014bgraphics

I often make 2-d plots showing a comparison of cases with a parameter 'On" of 'Off'. So I'll have several curves for the first case and then another set, using dashed lines, for the second case.

%The code would be pre 2014b
plot(x,y_on)
hold on
plot(x,y_off,'--')

How can I get the same result in 2014b?

Best Answer

I use

set(gca, 'ColorOrderIndex', 1)

between calls to reset the color order, and give you the same behavior as pre-2014b

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MATLAB: How can i get the default colormap to be JET in matlab 2014b

There are two different things getting confused here.

There's the Colormap. The default for that changed from jet to parula. As Steven said, you can easily change the default for that using the instructions he pointed to. The Colormap is used by objects which are converting numeric data into colors. Examples include scatter, surface, and indexed images.

Then there's the ColorOrder. The ColorOrder is used by commands which just want to create a bunch of different colored objects. Examples include plot and errorbar. The default ColorOrder also changed in R2014b, but neither the old nor the new ones have names. The old one looked a bit like jet, but it actually wasn't quite. To get the old ColorOrder back, you would need to do this:

set(groot,'DefaultAxesColorOrder',[0 0 1; 0 .5 0; 1 0 0; 0 .75 .75; ...
                                   .75 0 .75; .75 .75 0; .25 .25 .25])

It will probably still look a little different because of the antialiasing. That softens the colors a bit so they don't pop quite as much as they did in old versions. You could turn off GraphicsSmoothing if you really wanted them to look just like the old days.

MATLAB: How to delete/remove an extra yaxis (inserted by addaxis function), without removing the line that was created with the addaxis function.

The two blue and the two red axes have the same scale; there's no point in creating the extra ones; just plot both blue and both red lines when the respective axis is created.

You can do that by using a 2-column Y array for each or by "hold on" before adding the second line for each.

Once you created the axes and added the line; the line is a child of that axes and so if you remove that axes, you remove the line. You could make those two axes invisible so they wouldn't show, of course, but they would still be there and take up room for no purpose.

IOW, instead of removing something, don't create something unwanted/unneeded in the first place.

Best Answer

Related Solutions

MATLAB: How can i get the default colormap to be JET in matlab 2014b

MATLAB: How to delete/remove an extra yaxis (inserted by addaxis function), without removing the line that was created with the addaxis function.

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