# stem3m

Project stem plot on map axes

## Syntax

```h = stem3m(lat,lon,z) h = stem3m(lat,lon,z,LineSpec) h = stem3m(lat,lon,z,PropertyName,PropertyValue,...) ```

## Description

`h = stem3m(lat,lon,z)` displays a stem plot on the current map axes. Stems are located at the points (`lat`,`lon`) and extend from an altitude of 0 to the values of `z`. The coordinate inputs should be in the same `AngleUnits` as the map axes. It is important to note that the selection of z-values will greatly affect the 3-D look of the plot. Regardless of `AngleUnits`, the x and y limits of the map axes are at most -π to +π and -π/2 to +π/2, respectively. This means that for most purposes, appropriate `z` values would be on the order of 1 to 3, not 10 to 30. The axes `DataAspectRatio` property can be used to adjust the appearance of the graphic. The handles of the displayed stem lines can be returned in `h`.

`h = stem3m(lat,lon,z,LineSpec)` specifies the line style, marker, and color.

`h = stem3m(lat,lon,z,PropertyName,PropertyValue,...)` allows any property/value pair recognized by the MATLAB® `line` function to be specified for the stems.

A stem plot displays data as lines extending normal to the xy-plane, in this case, on a map.

## Examples

collapse all

Project a stem plot on a map axes.

```load coastlines axesm sinusoid; view(3) h = framem; set(h,'zdata',zeros(size(coastlat))) plotm(coastlat,coastlon) ptlat = [0 30 30 -50 -78]'; ptlon = [0 30 -70 65 -35]'; ptz = [1 1.5 2 .5 1]'; stem3m(ptlat,ptlon,ptz,'r-')```

collapse all

### Line Style, Marker, and Color

Specify the line style, marker, and color as a character vector or string containing symbols. The symbols can appear in any order. You do not need to specify all three characteristics (line style, marker, and color). For example, specify a red dashed line using `'--r'`.

Line StyleDescriptionResulting Line
`'-'`Solid line

`'--'`Dashed line

`':'`Dotted line

`'-.'`Dash-dotted line

MarkerDescriptionResulting Marker
`'o'`Circle

`'+'`Plus sign

`'*'`Asterisk

`'.'`Point

`'x'`Cross

`'_'`Horizontal line

`'|'`Vertical line

`'s'`Square

`'d'`Diamond

`'^'`Upward-pointing triangle

`'v'`Downward-pointing triangle

`'>'`Right-pointing triangle

`'<'`Left-pointing triangle

`'p'`Pentagram

`'h'`Hexagram

Color NameShort NameRGB TripletAppearance
`'red'``'r'``[1 0 0]`

`'green'``'g'``[0 1 0]`

`'blue'``'b'``[0 0 1]`

`'cyan'` `'c'``[0 1 1]`

`'magenta'``'m'``[1 0 1]`

`'yellow'``'y'``[1 1 0]`

`'black'``'k'``[0 0 0]`

`'white'``'w'``[1 1 1]`

## Version History

Introduced before R2006a