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NeXtMidas Training
Working with Files
Plotting Files
PLOT
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- The
PLOT Command:
PLOT is typically run with one or more files as an input.
- To input multiple files, separate each file by a bar character (
| ).
nM> plot world.shp|cities.prm
- Attributes for each layer can be changed in line with the
LAYER={...} qualifier.
nM> plot world.shp{TAG=COUNTRIES,LAYER={OPAQ=0,LABEL=NAME}}|&
cities.prm{LAYER={COLOR=RED}}
In the above example the qualifiers LAYER={OPAQ=0,LABEL=NAME} tells the
plot layer to make the opaqueness zero (i.e. transparent) and to show a label on the
readout with the NAME of the country.
- By default layer names are automatically set to match the root name of the file.
this can be overridden using the
TAG= qualifier.
- For example: Because of duplicate tags, only one of files shows up.
nM> plot world.shp{LAYER={OPAQ=0}}|world.prm
- This will work.
nM> plot world.shp{TAG=SHP,LAYER={OPAQ=0}}|world.prm{TAG=PRM}
- In order to use messages, one must add the
/msgid= switch.
(This is discussed more in the module on Macros.)
- The
PLOT command takes in a number of command line parameters allowing
customization of the plot.
- Most of these options are settable using
reg.<id>.<option> .
- A few examples:
- Setting Y-axis limits (
Y1 , Y2 ).
nM> plot/bg/id=myplot fftdemo.prm Y1=50 Y2=150
or
nM> plot/bg/id=myplot fftdemo.prm
nM> set reg.myplot.y1 50
nM> set reg.myplot.y2 150
- Setting the view of a map.
nM> plot/bg/id=myplot nxm.sys.dat.world.prm|cities.prm view=MERCATOR
nM> set reg.myplot.view LATLON
nM> set reg.myplot.view GEO
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