How create a image from a csv file

I have a csv file with 3 columns. X Y and a field, for instance pressure, p.

How can I create a image from those columns?

Answer 1

[Pawel Jastrzebski]

If by image you meant i.e.

• Contour plot - you can't really do it as your Z data (3rd column) would have to be a matrix of a X*Y size (or 1st column * 2nd column)

But you can still show a 3-dimensional data in 2D by using i.e.:

• Scatter plot with colour
• Scatter 3D with colour

See the following example:

x = 1:100;
y = 1:10:1000;
z = cos(linspace(0,4*pi,100)).*rand(1,100);

%2D scatter with colorbar
figure
scatter(x,y,[],z)
colorbar

%3D scatter with colorbar
figure
scatter3(x,y,z,[],z)
colorbar
view(45,45)

There's also possibility of creating an image from the an array, but you would have to see if it works for your data:

• Image doc