# Plot 3 scale graph

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Anoop on 27 Nov 2014
Commented: Image Analyst on 28 Nov 2014
Hi I need help with this code.
Weight=(37000:2000:74000);
CG=(16:1:42);
Index=(((Weight/1000)*(CG-25)*0.041935)+50);
I want to do a scattered plot with Weight on the Y axis, Index on the X axis(Bottom) and CG on X axis (Top). Please help.
Regards Anoop

mashtine on 27 Nov 2014
Hi Anoop, you can do this
Weight=(37000:2000:74000);
CG=(16:1:42);
Index=(((Weight/1000)*(CG-25)*0.041935)+50);
figure
h = scatter3(CG,Index,Weight);
First you will need to make sure your Weight and CG are of the same dimensions. One is 1x19 and the other is 1x27 of which you cannot calculate index from. Once you do that, from there you can look at all the scatter3 plot options to change the graph or you can do this interactively with the figure edit tools.
Anoop on 27 Nov 2014
HI Masao,
I made it the same dimension
Weight=(22000:2000:74000);
CG=(16:1:42);
Index=(((Weight/1000)*(CG-25)*0.041935)+50);
figure
h=scatter3(CG,Index,Weight);
I am getting this error.
Error using *
Inner matrix dimensions must agree.
Error in Trimsheet (line 3)
Index=(((Weight/1000)*(CG-25)*0.041935)+50);

Image Analyst on 27 Nov 2014
You need to use meshgrid to get all possible combinations of Weight and CG:
Weight=(37000:2000:74000);
CG=(16:1:42);
[x, y] = meshgrid(Weight, CG);
Index=(((x/1000).*(y-25)*0.041935)+50);
h = scatter3(y(:), Index(:), x(:)); Image Analyst on 28 Nov 2014
I don't really know. Perhaps you can get it by manipulating the camera angle. Or else just create it at a very low level with calls to line().