# zerom

(Removed) Construct regular data grid of 0s

`zerom` has been removed. Use the `georefcells` and `zeros` functions instead. For more information, see Version History.

## Syntax

```[Z,refvec] = zerom(latlim,lonlim,scale) ```

## Description

`[Z,refvec] = zerom(latlim,lonlim,scale)` returns a full regular data grid consisting entirely of `0`s and a three-element referencing vector for the returned `Z`. The two-element vectors `latlim` and `lonlim` define the latitude and longitude limits of the geographic region. They should be of the form `[south north]` and `[west east]`, respectively. The scalar `scale` specifies the number of rows and columns per degree of latitude and longitude.

## Examples

```[Z,refvec] = zerom([46,51],[-79,-75],1) Z = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 refvec = 1 51 -79```

## Version History

Introduced before R2006a

expand all

### R2023b: Removed

Some functions that return referencing vectors have been removed, including the `zerom` function. Instead, create a geographic raster reference object using the `georefcells` function and a matrix of zeros using the `zeros` function. Reference objects have several advantages over referencing vectors.

• Unlike referencing vectors, reference objects have properties that document the size of the associated raster, its geographic limits, and the direction of its rows and columns. For examples of reference object properties, see the `GeographicPostingsReference` object.

• You can manipulate the limits of rasters associated with geographic reference objects using the `geocrop` function.

• You can manipulate the size and resolution of rasters associated with geographic reference objects using the `georesize` function.

• Most functions that accept referencing vectors as inputs also accept reference objects.

This table shows how to update your code to use the `georefcells` and `zeros` functions instead of the `zerom` function.

RemovedRecommended
`[Z,refvec] = zerom(latlim,lonlim,scale);`
```R = georefcells(latlim,lonlim,1/scale,1/scale); Z = zeros(R.RasterSize);```