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could anyone tell me how to have equal spacing of selected numbers with respect to axis.

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could anyone tell me how to have equal spacing of selected numbers with respect to axis with respect to the command line
set(gca, 'XTick', [0, 1, 2, 23,24]);
I want to have equal spacing between 0,1,2,23 and 24 with respect to x axis.
  2 Comments
Walter Roberson
Walter Roberson on 28 Mar 2018
The data you are plotting, are the x values for it only 0, 1, 2, 23 and 24, and nothing else?
Is it necessary that the data cursor should show the 24 when it is over information in that range, or is it okay if the data cursor can be wrong?
... And you are still using R2015b, right?
Prabha Kumaresan
Prabha Kumaresan on 29 Mar 2018
s i am using R2015b. data cursor should show only 0,1,2,23,24 numbers in the x axis with equal spacing.
I want to have the graph by using the code
%before plotting
XData(XData>2&XData<23)=(XData(XData>2&XData<23)-2)/(23-2)+2;
XData(XData>=23)=XData(XData>=23)-(23-2)+1;
%plotting code
plot(XData,YData)
%renaming of ticks
set(gca, 'XTick', [0, 1, 2, 3,4]);
set(gca,'XTickLabel',num2str([0;1;2;23;24]))
If i use the code the number 0,23 and 24 are not getting displayed.

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Accepted Answer

Walter Roberson
Walter Roberson on 29 Mar 2018
tx = XData;
mask = tx > 2.5;
tx(mask) = tx(mask) - 20;
plot(tx, YData);
xlim([0 4]);
set(gca, 'XTick', [0, 1, 2, 3,4]);
set(gca,'XTickLabel',num2str([0;1;2;23;24]))
dcm = datacursormode(gcf, 'DisplayStyle', 'datatip', 'UpdateFcn', @myupdatefcn, 'SnapToDataVertex', 'on');
with
function txt = myupdatefcn(src, event)
loc = event.Position;
x = loc(1);
y = loc(2);
if x > 2.5; x = x + 20; end
txt = {sprintf('x: %g', x), sprintf('y: %g', y)};
The assignment to dcm and the function are not needed if you do not care about what data cursor mode (tooltips) shows.
  3 Comments
Image Analyst
Image Analyst on 29 Mar 2018
Edited: Image Analyst on 29 Mar 2018
Make it easy for us to see by using the green and brown frame icon to insert a picture/screenshot. Or else attach a PNG image instead of a .fig file, which takes multiple additional steps to see.

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More Answers (2)

Sergey Kasyanov
Sergey Kasyanov on 28 Mar 2018
You can compress data between 2 and 23 ticks roughly by
%before plotting
XData(XData>2&XData<23)=(XData(XData>2&XData<23)-2)/(23-2)+2;
XData(XData>=23)=XData(XData>=23)-(23-2)+1;
%plotting code
plot(XData,YData)
%renaming of ticks
set(gca, 'XTick', [0, 1, 2, 3,4]);
set(gca,'XTickLabel',num2str([0;1;2;23;24]))
  9 Comments
Prabha Kumaresan
Prabha Kumaresan on 29 Mar 2018
i am using the code
XData(XData>2&XData<23)=(XData(XData>2&XData<23)-2)/(23-2)+2;
XData(XData>=23)=XData(XData>=23)-(23-2)+1;
plot(XData,YData)
xlim([0,24])
set(gca, 'XTick', [0, 1, 2, 3,4]);
set(gca,'XTickLabel',{'0','1','2','23','24'})
and the graph which i am getting is also attached.
It is seen from the graph all the points 0,1,2,23,24 are present at one side of the graph.The rest of the places are left blank.But I want to have even spreading of the numbers with equal spacing.

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Image Analyst
Image Analyst on 29 Mar 2018
Try this to find File Exchange submissions that allow a "break" in the axes: https://www.mathworks.com/matlabcentral/fileexchange/?utf8=%E2%9C%93&term=broken+axis

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