how to set the axis in matlab to actual data min and max

I'm plotting data and the x and y axis are setting the min and max to 0 and 300 but the actual data min and max is -6.1686 and -6.06 respectively. I've attached three images showing what I get, proving the min and max values and finally the expected axis labels.

Would really appreciate some help on how to solve this. Even if there is a manual way to set this and keep the generated image in position.

[arun]

Rescaling the axis may work

m*(0-300)=(-6.1686+6.06);

if u multiply "m" with x axis and subtract 6.1686 then u will get the expected graph of x axis. Similar style u can apply for y axis too to get the actual graph

[Tadgh Cullen]

That's exactly what i'm trying to do, but I can't get it to work. This is the code i'm using. How would I go about writing code to do that?

 clear; clc

 %%Load the given data
 load('25mGridData.mat')

 %%Working with x and y data
 X=data.X; %Units are m
 Y=data.Y; %Units are m

 x_transposed=((X)');
 x=(x_transposed);
 figure
 contourf(x)

 y_transposed=((Y)');
 y=(y_transposed);
 figure
 contourf(y)

[arun]

Could u attach the 25mGridData.mat file

[Mike Garrity]

The issue is that you haven't told contourf what your X coordinates are. The contourf command has a form which takes 3 args:

contourf(X,Y,V)

If you omit the first two, then it just uses the row and column indices of V as the X & Y coordinates.

I'm not entirely sure what your data looks like, but I would expect your calls to contourf to look something like this:

contourf(x,y,x)

% ...

contourf(x,y,y)

Answer 1

[Image Analyst]

See if you can use the actual y min and max in ylim() to override the default y axis range:

yMin = min(y(:));
yMax = max(y(:));
ylim([yMin, yMax]);