## vec2grid

version 1.3.0.1 (3.57 KB) by
Reshapes vector data to a grid

Updated 23 Sep 2021

From GitHub

## vec2grid.m Documentation

This is a simple utility to rearrange a list of data points into an ndgrid-style grid. It allows the original data points to be listed in any order, and allows for missing grid points (which become NaNs in the final grid).

Note: In order to support higher dimensional data, I opted to return data in ndgrid format rather than meshgrid format. This means output will often need to be transposed to be used with plotting functions like surf, pcolor, etc.

### Syntax

``````[xg, yg] = vec2grid(x1, x2, ..., y);
[xg, yg] = vec2grid(xy);
[xg1, xg2, ... yg] = vec2grid(...);
``````

### Example

Let's assume we have a list of 2D data points, with a corresponding vector of z-data for each x-y point. The data points are stored in random order, and a few points are missing from the full grid.

```[x,y] = ndgrid(1:4,1:5);
z = (1:numel(x))';

order = randperm(numel(x), numel(x)-3)';
x = x(order); y = y(order); z = z(order);

[x y z]```
``````ans =

1     3     9
3     5    19
4     3    12
3     3    11
2     2     6
2     4    14
4     5    20
1     5    17
2     3    10
2     5    18
4     2     8
3     2     7
3     4    15
2     1     2
1     1     1
1     4    13
3     1     3
``````

We use vec2grid to return the data to a gridded format.

`[xg,yg,zg] = vec2grid([x y z])`
``````xg =

1
2
3
4

yg =

1
2
3
4
5

zg =

1   NaN     9    13    17
2     6    10    14    18
3     7    11    15    19
NaN     8    12   NaN    20
``````

### Cite As

Kelly Kearney (2022). vec2grid (https://github.com/kakearney/vec2grid-pkg), GitHub. Retrieved .

##### MATLAB Release Compatibility
Created with R2007a
Compatible with any release
##### Platform Compatibility
Windows macOS Linux