triplot
2-D triangular plot
Description
triplot( plots the triangles defined by a
2-D TO)triangulation or delaunayTriangulation
object.
triplot(___, specifies
one or more properties of the plot using name-value pairs. For example,
Name,Value)'LineWidth',2 sets the edge width to 2 points.
h = triplot(___) returns a chart
line handle used to create the plot. Use h to query and modify properties
of the plot. For more information, see Line Properties.
Examples
Delaunay Triangulation
Create and plot a Delaunay triangulation from a set of 2-D points.
rng default;
P = rand(10,2);
T = delaunayTriangulation(P);
triplot(T)
Input Arguments
T — Triangle connectivity
matrix
Triangle connectivity, specified as a 3-column matrix where each row contains the point vertices defining a triangle.
x — x-coordinates
column vector
x-coordinates, specified as a column vector.
y — y-coordinates
column vector
y-coordinates, specified as a column vector.
LineSpec — Line style, marker, and color
character vector | string
Line style, marker, and color, specified 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, if you omit the line style and specify the marker, then the plot shows only the marker and no line.
Example: '--or' is a red dashed line with circle markers
| Line Style | Description |
|---|---|
- | Solid line |
-- | Dashed line |
: | Dotted line |
-. | Dash-dot line |
| Marker | Description |
|---|---|
'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 | Description |
|---|---|
| yellow |
| magenta |
| cyan |
| red |
| green |
| blue |
| white |
| black |
TO — Triangulation object
triangulation | delaunayTriangulation
Triangulation object, specified as a 2-D triangulation or
delaunayTriangulation object.
Name-Value Pair Arguments
Specify optional
comma-separated pairs of Name,Value arguments. Name is
the argument name and Value is the corresponding value.
Name must appear inside quotes. You can specify several name and value
pair arguments in any order as
Name1,Value1,...,NameN,ValueN.
triplot(TO,'LineStyle','--')The properties listed here are only a subset. For a complete list, see Line Properties.
Line color, specified as an RGB triplet, a hexadecimal color code, a color name, or a
short name. The default value of [0 0 0] corresponds to black.
For a custom color, specify an RGB triplet or a hexadecimal color code.
An RGB triplet is a three-element row vector whose elements specify the intensities of the red, green, and blue components of the color. The intensities must be in the range
[0,1]; for example,[0.4 0.6 0.7].A hexadecimal color code is a character vector or a string scalar that starts with a hash symbol (
#) followed by three or six hexadecimal digits, which can range from0toF. The values are not case sensitive. Thus, the color codes'#FF8800','#ff8800','#F80', and'#f80'are equivalent.
Alternatively, you can specify some common colors by name. This table lists the named color options, the equivalent RGB triplets, and hexadecimal color codes.
| Color Name | Short Name | RGB Triplet | Hexadecimal Color Code | Appearance |
|---|---|---|---|---|
'red' | 'r' | [1 0 0] | '#FF0000' |
|
'green' | 'g' | [0 1 0] | '#00FF00' |
|
'blue' | 'b' | [0 0 1] | '#0000FF' |
|
'cyan'
| 'c' | [0 1 1] | '#00FFFF' |
|
'magenta' | 'm' | [1 0 1] | '#FF00FF' |
|
'yellow' | 'y' | [1 1 0] | '#FFFF00' |
|
'black' | 'k' | [0 0 0] | '#000000' |
|
'white' | 'w' | [1 1 1] | '#FFFFFF' |
|
'none' | Not applicable | Not applicable | Not applicable | No color |
Here are the RGB triplets and hexadecimal color codes for the default colors MATLAB® uses in many types of plots.
| RGB Triplet | Hexadecimal Color Code | Appearance |
|---|---|---|
[0 0.4470 0.7410] | '#0072BD' |
|
[0.8500 0.3250 0.0980] | '#D95319' |
|
[0.9290 0.6940 0.1250] | '#EDB120' |
|
[0.4940 0.1840 0.5560] | '#7E2F8E' |
|
[0.4660 0.6740 0.1880] | '#77AC30' |
|
[0.3010 0.7450 0.9330] | '#4DBEEE' |
|
[0.6350 0.0780 0.1840] | '#A2142F' |
|
Example: 'blue'
Example: [0 0 1]
Example: '#0000FF'
Line style, specified as one of the options listed in this table.
| Line Style | Description | Resulting Line |
|---|---|---|
'-' | Solid line |
|
'--' | Dashed line |
|
':' | Dotted line |
|
'-.' | Dash-dotted line |
|
'none' | No line | No line |
See Also
delaunay | delaunayTriangulation | triangulation | trimesh | trisurf