trackg
Display great circle or rhumb line on axesm-based map using
mouse
Syntax
h = trackg(ntrax)
h = trackg(ntrax,npts)
h = trackg(ntrax,LineSpec)
h = trackg(ntrax,PropertyName,PropertyValue,...)
[lat,lon] = trackg(ntrax,npts,...)
h = trackg(track,ntrax,...)
Description
h = trackg(ntrax) brings forward the current
axesm-based map and waits for the user to make (2
x
ntrax) mouse clicks. The output h is a vector of
handles for the ntrax track segments, which are then
displayed.
h = trackg(ntrax,npts) specifies
the number of plotting points to be used for each track segment. npts is
100 by default.
h = trackg(ntrax,LineSpec) specifies the line style,
marker, and color.
h = trackg(ntrax, allows
property name/property value pairs to be set, where PropertyName,PropertyValue,...)PropertyName and PropertyValue are
recognized by the line function.
[lat,lon] = trackg(ntrax,npts,...) returns
the coordinates of the plotted points rather than the handles of the
track segments. Successive segments are stored in separate columns
of lat and lon.
h = trackg( specifies
the logic with which tracks are calculated. If track,ntrax,...)track is 'gc' (the
default), a great circle path is used. If track is 'rh',
rhumb line logic is used.
This function is used to define great circles or rhumb lines for display using mouse clicks. For each track, two clicks are required, one for each endpoint of the desired track segment. You can modify the track after creation by Shift+clicking it. The track is then in edit mode, during which you can change the length and position by dragging control points, or by entering values into a control panel. Shift+clicking again exits edit mode.
More About
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 Style | Description | Resulting Line |
|---|---|---|
"-" | Solid line |
|
"--" | Dashed line |
|
":" | Dotted line |
|
"-." | Dash-dotted line |
|
| Marker | Description | Resulting Marker |
|---|---|---|
"o" | Circle |
|
"+" | Plus sign |
|
"*" | Asterisk |
|
"." | Point |
|
"x" | Cross |
|
"_" | Horizontal line |
|
"|" | Vertical line |
|
"square" | Square |
|
"diamond" | Diamond |
|
"^" | Upward-pointing triangle |
|
"v" | Downward-pointing triangle |
|
">" | Right-pointing triangle |
|
"<" | Left-pointing triangle |
|
"pentagram" | Pentagram |
|
"hexagram" | Hexagram |
|
| Color Name | Short Name | RGB Triplet | Appearance |
|---|---|---|---|
"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
