Main Content

gcm

Query projection structure of current axesm-based map

collapse all in page

    Syntax

    mstruct = gcm
    mstruct = gcm(abm)

    Description

    mstruct = gcm returns the map projection structure of the current axesm-based map, which contains the settings for all the current axesm-based map properties.

    example

    mstruct = gcm(abm) returns the map projection structure for the specified axesm-based map.

    Examples

    collapse all

    Open Live Script

    Establish an axesm-based map with default values, then look at the structure.

    axesm mercator

    Figure contains an axes object. The axes object is empty.

    mstruct = gcm
    mstruct = struct with fields:
     mapprojection: 'mercator'
              zone: []
        angleunits: 'degrees'
            aspect: 'normal'
     falsenorthing: 0
      falseeasting: 0
       fixedorient: []
             geoid: [1 0]
       maplatlimit: [-86 86]
       maplonlimit: [-180 180]
      mapparallels: 0
        nparallels: 1
            origin: [0 0 0]
       scalefactor: 1
           trimlat: [-86 86]
           trimlon: [-180 180]
             frame: 'off'
             ffill: 100
        fedgecolor: 'default'
        ffacecolor: 'none'
         flatlimit: [-86 86]
        flinewidth: 2
         flonlimit: [-180 180]
              grid: 'off'
         galtitude: Inf
            gcolor: 'default'
        glinestyle: ':'
        glinewidth: 0.5000
    mlineexception: []
         mlinefill: 100
        mlinelimit: []
     mlinelocation: 30
      mlinevisible: 'on'
    plineexception: []
         plinefill: 100
        plinelimit: []
     plinelocation: 15
      plinevisible: 'on'
         fontangle: 'normal'
         fontcolor: 'default'
          fontname: 'Helvetica'
          fontsize: 10
         fontunits: 'points'
        fontweight: 'normal'
       labelformat: 'compass'
     labelrotation: 'off'
        labelunits: 'degrees'
     meridianlabel: 'off'
    mlabellocation: 30
    mlabelparallel: 86
       mlabelround: 0
     parallellabel: 'off'
    plabellocation: 15
    plabelmeridian: -180
       plabelround: 0

    Input Arguments

    collapse all

    axesm-based map, specified as a map created using the axesm, worldmap, or usamap function.

    Output Arguments

    collapse all

    Map projection structure, returned as a structure with fields identical to the properties of an axesm-based map. Examples of map projection structure fields include the projection name, angle unit, origin, aspect, false easting, and false northing. For more information about the properties of axesm-based maps, see axesm-Based Map Properties.

    Tips

    • You can query specific properties of axesm-based maps by using the getm function.

    • You can modify specific properties of axesm-based maps by using the setm function.

    Version History

    Introduced before R2006a

    See Also

    | |