Need a way to fix the y-axis with linear scaling and log scaling.

Hello.

I need help in order to set the axis of my plot so I can view my data correctly.

My y-axis needs to be split in linear scale from 0-10 and log scale from 10-100. I just want to set the y-axis without changing the values of my data. I need it to look exactly as the following image.

I've been trying several solutions I found online but with no success. If I understand correctly I should be able to set the properties of the Figure or the UIAxes but nothing is working.

I really appreciate any suggestion. Thank you.

[dpb]

The axis scale is either 'log' or 'linear', MATLAB doesn't have the facility to display the same axis in different scales over a range.

One would have to place two axis one above the other and plot into each its range using the desired scaling for each.

Alternatively, one could achieve the effect with some additional effort by taking the log of the data >=10 while leave that <10 alone and then plot on a linear y axis. The tick locations and grid lines would have to be drawn in their correct positions and labeled appropriately for the log section.

[Francisco Vingut Escandell]

Thanks for the answer. Following your advice I've found a work around.

tiledlayout(2,1,"TileSpacing","none")

tiledlayout(2,1,"TileSpacing","none")                    
ax1=nexttile;
x = 1:2880000;
y1 = aeeg_data(x);
semilogy(ax1,x,y1)
ylim([10 100])
xlim([0 2880000])
yticks([10 25 100])
set(gca,'xtick',[])
grid on;
grid minor;
ax2=nexttile;
y2 = aeeg_data(x);
plot(ax2,x,y2)
ylim([0 10])
xlim([0 2880000])
yticks([0 5 10])
xticks(0:720000:2880000)
xticklabels(0:1:4)  
grid on;
grid minor;                  

Although now I have another issue when I try to set my plot box aspect ratio for both plots.

In this case I can't remove the space between the plots. Any ideas with that?

pbaspect(ax1,[10.56 1 1])
pbaspect(ax2,[10.56 1 1])

[Francisco Vingut Escandell]

I've founda way by setting the position of the figure with dimensions that follow my desired ratio before the tiledlayout:

figure('Position',[1,1,1000,193])

But now I need to find a way to replicate this in the app designer. The problem I have with it is that having 2 UIAxis on a grid on the GUI makes it difficult to remove the title and ticks space between them.

[dpb]

You might have to revert to the other option of only using one axis object, then, and doing it all by manipulation of the data itself.

[dpb]

hUF=uifigure('position',[100 400 1000 200])
hTL=tiledlayout(hUF,2,1,'TileSpacing','none');
hAx=nexttile(hTL,1);
hAx(2)=nexttile(hTL,2);
hAx(1).XAxis.Visible='off';

results in the two axes with a space between them that looks like would be able to fix by readjusting the positions such that the two meet again.

Not sure about the difference with the 'none' spacing between the uifigure and regular figure; that may be something to ask official TMW support about...

I've not done much (as in any) graphics in an app as yet; they've all just been driving other processes to build database files. Hence, I don't have any inside knowledge or tricks specific to differences between figure and uifigure behavior...