Need help with Plots
显示 更早的评论
Hi everyone,
I am trying to plot a map. I was given a file with coastlines which I mapped using "load" and "plot". Now I am trying to add a set of values to the map using "pcolor" the issue is that when I try to plot it it looks like this: http://img267.imageshack.us/i/matlabb.png/
The plot on the left is my failed map, the black box being the plot on the right. I am trying to plot that values on the right onto the map but it doesn't look right =S.
Any suggestions on how I would go about this?
采纳的回答
Matt Tearle
2011-2-17
0 个投票
Or is the problem that the colors should cover the whole map (instead of a small box in the middle)? In which case the problem is that the x & y values are indices (1 to 38 or so) instead of actual x/y values. In that case, you need to define some x & y coordinates to map the 38 pixels to 360/180 degrees, and then do pcolor(x,y,z)
5 个评论
Andrew
2011-2-17
Matt Tearle
2011-2-17
Depends on the math! But assuming it's just a linear scaling, use
[m,n] = size(z);
x = linspace(-180,180,n);
y = linspace(-90,90,n);
Matt Tearle
2011-2-17
D'oh. m, not n for y.
Andrew
2011-2-17
Matt Tearle
2011-2-17
:)
And thanks for the feedback
更多回答（1 个）
Matt Tearle
2011-2-17
It's hard to tell exactly from the image, but it looks like maybe it's just the lines that make it look like a black box. Try turning them off:
h = pcolor(...);
set(h,'linestyle','none')
类别
在 帮助中心 和 File Exchange 中查找有关 Orange 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
