How to show x and y axes in a MATLAB graph

Question

I am drawing a graph using the plot   function  but by default it doesn t show the axes   How do we enable showing the axes at x 0 and y 0 on the graph   Actually my graph is something like   And I want a horizontal line corresponding to y 0  How do I get that

User · Answer

The poor man s solution is to simply graph the lines x 0 and y 0   You can adjust the thickness and color of the lines to differentiate them from the graph

User · Answer

Inspired by  Luisa s answer  I made a function  axes0  x   linspace -2 2 101   plot x 2 x  3-3 x 1   axes0     You can follow the link above to download the function and get more details on usage

User · Answer

This should work in Matlab   set gca   XAxisLocation    origin     Options are  bottom  top  origin   For Y axis   YAxisLocation  left  right  origin

User · Answer

If you want the axes to appear more like a crosshair  instead of along the edges  try axescenter from the Matlab FEX   EDIT  just noticed this is already pointed out in the link above by Jitse Nielsen

User · Answer

Martijn your order of function calls is slightly off  Try this instead   x -3 0 1 3  y   x  3  plot x y   hold on plot  -3 3    0 0    k    hold off

User · Answer

By default  plot does show axes  unless you ve modified some settings  Try the following  hold on    make sure no new plot window is created on every plot command axes      produce plot window with axes plot   whatever your plot command is   plot  0 10    0 0    k-      plot the horizontal line

User · Answer

Maybe grid on will suffice

User · Answer

I know this is coming a bit late  but a colleague of mine figured something out   figure  plot   1 10  cos rand 1 10  -0 75   -   hold on plot   1 10  zeros 1 10   k -   text  1 10 -0 09 ones 1 10   -0 015    0   1    2   3   4   5   6   7   8   9     set gca  XTick       XColor   1 1 1   box off

User · Answer

Easiest solution   plot  0 0   0 0   xData  yData    This creates an invisible line between the points  0 0  to  0 0  and since Matlab wants to include these points it will shows the axis

[matlab] How to show x and y axes in a MATLAB graph?

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