I want to display three figures in a figure window.

Assuming that I divide 2x2 regions.

```
subplot(2,2,1)
---------+-----------
| R1 | R2 |
---------+-----------
| R3 | R4 |
---------+-----------
```

I want to show a figure merging R1 and R3 ant other two in R2 and R4

I can display them merging R1-R2 or merging R3-R4

```
subplot(2,2,1:2)
subplot(2,2,3:4)
```

but, cannot merge them vertically.

Answer:

This is quite simple; just feed into `subplot`

the locations as a vector.

For instance,

```
x = -2*pi:0.01:2*pi;
subplot(2,2,[1,3])
plot(x,sin(x))
subplot(2,2,2)
plot(x,cos(x))
subplot(2,2,4)
plot(x,x.^2)
```

gives:

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