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NAME: EXTREMA PURPOSE: This function returns the locations of the local extrema in a given time series. CATEGORY: Time Series Analysis CALLING SEQUENCE: Result = EXTREMA( Data ) INPUTS: Data: A vector of type integer or floating point. KEYWORD PARAMETERS: FLAT: If set, all locations along broad flat extrema are returned. The default is for only the middle location to be returned. ENDS: If set, end points are always returned as extrema. The default is to return the end points only if they lie outside the next minimum and maximum. OPTIONAL OUTPUTS: MAXIMA: Returns the locations of the maxima. MINIMA: Returns the locations of the minima. OUTPUTS: Result: Returns the locations of the extrema. PROCEDURE: For each point, neighbouring values are compared to see if the given point is an extremum. EXAMPLE: Define a vector. data = [1,2,3,2] Find the local maxima. result = extrema( data ) The result should be [ 0, 2 ]. MODIFICATION HISTORY: Written by: Daithi A. Stone (stoned@atm.ox.ac.uk), 2003-10-09.
(See projects/emm/OrbitGeometryPlotFiles/extrema.pro)
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mvn_cylplot_panel_brain.pro
Procedure to create a 2D cylindrical projection plot for a MAVEN spaecraft
trajectory.
Syntax:
trange = mvn_cylplot_panel_brain, trange, res
Inputs:
trange - 2-elelment timerange over which to plot the
trajectory
res - The time resolution to use when plotting
[xy]range - 2-element bounds for the plot, in
Rm. Default = [-3,3]
showperiapsis - Boolean: Indicate the location of
periapsis. Default = not set
showticks - Indicate regular intervals (centered on
periapsis) along the trajectory. Default =
not set
tickinterval - The interval at which to show ticks, in
seconds. Default = 600
symsize - Symbol size to use for the
trajectory. Sizes of periapsis, interval
ticks, crustal fields all scale from
this. Default = 1.
charsize - Character size to use for plot
axes. Default = 1
noerase - Boolean, default = 0. Setting to 1
indicates that and plot currently on the
plot device should not be erased.
Dependencies:
1. Berkeley MAVEN software
2. ctload.pro - routine from David Fanning (coyote) to load
color tables, including Brewer colors.
3. colorscale.pro - Dave Brain version of bytscl.pro
Comments:
1. This was developed for use with a single orbit
trajectory. I'm not sure how it would work with
something larger.
2. This routine acts on tplot variables loaded using
mvn_load_eph_brain.pro. If it doesn't find them, it
will load them.
Dave Brain
12 January, 2017 -Initial version
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(See projects/emm/OrbitGeometryPlotFiles/mvn_cylplot_panel.pro)
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mvn_cylplot_panel_brain.pro
Procedure to create a 2D cylindrical projection plot for a MAVEN spaecraft
trajectory.
Syntax:
trange = mvn_cylplot_panel_brain, trange, res
Inputs:
trange - 2-elelment timerange over which to plot the
trajectory
res - The time resolution to use when plotting
[xy]range - 2-element bounds for the plot, in
Rm. Default = [-3,3]
showperiapsis - Boolean: Indicate the location of
periapsis. Default = not set
showticks - Indicate regular intervals (centered on
periapsis) along the trajectory. Default =
not set
tickinterval - The interval at which to show ticks, in
seconds. Default = 600
symsize - Symbol size to use for the
trajectory. Sizes of periapsis, interval
ticks, crustal fields all scale from
this. Default = 1.
charsize - Character size to use for plot
axes. Default = 1
noerase - Boolean, default = 0. Setting to 1
indicates that and plot currently on the
plot device should not be erased.
Dependencies:
1. Berkeley MAVEN software
2. ctload.pro - routine from David Fanning (coyote) to load
color tables, including Brewer colors.
3. colorscale.pro - Dave Brain version of bytscl.pro
Comments:
1. This was developed for use with a single orbit
trajectory. I'm not sure how it would work with
something larger.
2. This routine acts on tplot variables loaded using
mvn_load_eph_brain.pro. If it doesn't find them, it
will load them.
Dave Brain
12 January, 2017 -Initial version
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(See projects/emm/OrbitGeometryPlotFiles/mvn_cylplot_panel_brain.pro)
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mvn_get_orbit_times_brain.pro
Function to return a trange corresponding to the start and stop
times (measured apoapsis to apoapsis) of a single MAVEN orbit
containing the timestamp passed to the function
Syntax:
trange = mvn_get_orbit_times( time )
Inputs:
time - single timestamp. If an array is passed
the function only acts on the first element
Dependencies:
none outside of Berkeley MAVEN software (I think)
Dave Brain
12 January, 2017 -Initial version
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(See projects/emm/OrbitGeometryPlotFiles/mvn_get_orbit_times_brain.pro)
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mvn_groundtrack_panel_brain.pro
Procedure to create a 2D groundtrack plot for a MAVEN spaecraft
trajectory. It automatically includes a map of crustal Br from MGS.
Syntax:
trange = mvn_groundtrack_panel_brain, trange, res
Inputs:
trange - 2-elelment timerange over which to plot the
trajectory
res - The time resolution to use when plotting
terminator - Boolean: Indicate the location of the
terminator and subsolar point at the
midpoint of the timerange, and shade the
nightside. Default = not set
showtermrange - Boolean: Indicate the *range* in terminator
location over the trange passed to the
routine. Automatically sets /terminator,
and adds terminator lines and subsolar
locations for the start and stop of the
timerange. Default = not set
showperiapsis - Boolean: Indicate the location of
periapsis. Default = not set
showticks - Indicate regular intervals (centered on
periapsis) along the trajectory. Default =
not set
tickinterval - The interval at which to show ticks, in
seconds. Default = 600
symsize - Symbol size to use for the
trajectory. Sizes of periapsis, interval
ticks, crustal fields all scale from
this. Default = 1.
charsize - Character size to use for plot
axes. Default = 1
noerase - Boolean, default = 0. Setting to 1
indicates that and plot currently on the
plot device should not be erased.
Dependencies:
1. Berkeley MAVEN software
2. ctload.pro - routine from David Fanning (coyote) to load
color tables, including Brewer colors.
3. colorscale.pro - Dave Brain version of bytscl.pro
4. Map of crustal field Br - edit line ~116 to point to the
relevant location on your machine
Comments:
1. This was developed for use with a single orbit
trajectory. I'm not sure how it would work with
something larger.
2. This routine acts on tplot variables loaded using
mvn_load_eph_brain.pro. If it doesn't find them, it
will load them.
Dave Brain
12 January, 2017 -Initial version
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(See projects/emm/OrbitGeometryPlotFiles/mvn_groundtrack_panel.pro)
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mvn_groundtrack_panel_brain.pro
Procedure to create a 2D groundtrack plot for a MAVEN spaecraft
trajectory. It automatically includes a map of crustal Br from MGS.
Syntax:
trange = mvn_groundtrack_panel_brain, trange, res
Inputs:
trange - 2-elelment timerange over which to plot the
trajectory
res - The time resolution to use when plotting
terminator - Boolean: Indicate the location of the
terminator and subsolar point at the
midpoint of the timerange, and shade the
nightside. Default = not set
showtermrange - Boolean: Indicate the *range* in terminator
location over the trange passed to the
routine. Automatically sets /terminator,
and adds terminator lines and subsolar
locations for the start and stop of the
timerange. Default = not set
showperiapsis - Boolean: Indicate the location of
periapsis. Default = not set
showticks - Indicate regular intervals (centered on
periapsis) along the trajectory. Default =
not set
tickinterval - The interval at which to show ticks, in
seconds. Default = 600
symsize - Symbol size to use for the
trajectory. Sizes of periapsis, interval
ticks, crustal fields all scale from
this. Default = 1.
charsize - Character size to use for plot
axes. Default = 1
noerase - Boolean, default = 0. Setting to 1
indicates that and plot currently on the
plot device should not be erased.
Dependencies:
1. Berkeley MAVEN software
2. ctload.pro - routine from David Fanning (coyote) to load
color tables, including Brewer colors.
3. colorscale.pro - Dave Brain version of bytscl.pro
4. Map of crustal field Br - edit line ~116 to point to the
relevant location on your machine
Comments:
1. This was developed for use with a single orbit
trajectory. I'm not sure how it would work with
something larger.
2. This routine acts on tplot variables loaded using
mvn_load_eph_brain.pro. If it doesn't find them, it
will load them.
Dave Brain
12 January, 2017 -Initial version
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(See projects/emm/OrbitGeometryPlotFiles/mvn_groundtrack_panel_brain.pro)
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mvn_load_eph_brain.pro
Procedure to create tplot variables containing ephemeris information
at a given time resolution over a given range. I realize
there's a routine for this in the Berkeley distribution. I
wanted things organized my own way, and had already started creating
something when I found it.
Syntax:
mvn_load_eph_brain, trange, 30d0
Inputs:
trange - timerange over which to load ephemeris
res - time resolution, in seconds. Default = 60
Dependencies:
none outside of Berkeley MAVEN software (I think)
Dave Brain
19 February, 2015 - Initial version (approximate date). Not the
prettiest code ever.
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(See projects/emm/OrbitGeometryPlotFiles/mvn_load_eph_brain.pro)
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mvn_orbit_survey_plot_ephemeris
Routine to create an ephemeris survey plot with 6 different panels,
given a single timestamp. The plot is for the entire orbit
containing that timestamp
Syntax: mvn_orbit_survey_plot_ephemeris, time, fileroot, screen=screen
Inputs:
time - any UTC timestamp, as string or double precision
fileroot - the name of the file, without extension
(i.e. no '.jpg' at the end)
screen - boolean keyword to send the output to the
screen; used for testing. Default = 0
overlay - Structure describing the image/data to be
overlaid on the sphere of Mars. Contains
the following tags:
LAT: N-element array of latitudes of each
point to be painted on the sphere.
ELON: N-element array of East longitudes
of each point to be painted on the sphere
DATA: N-element array of values
(e.g. brightnesses etc.) to be painted on
the sphere
COLOR_TABLE: which color table is wanted
for the overlay
LOG: 0 or 1 for whether the data should be
plotted with a logarithmic color scale
RANGE: the color scale range for the data
OBSPOS: in the case of images of Mars
captured by orbital assets, this is the
position of the "camera", in Cartesian
coordinates.
DESCRIPTION: a string, briefly describing
what is being overlaid on the
sphere. Ideally this should be less than
20 characters
FILENAME: if the image comes from a
particular file
obspos: pos, description:disk [0, 0].bands[band_index], $
Filename:file, time: time}
Dependencies:
There are many code dependencies here, not including the
obvious dependency on Berkeley's MAVEN software. I haven't had
time to compile a complete list, but here's a partial
list of code by Dave Brain that is needed to run this routine:
mvn_get_orbit_times_brain.pro - gets start/stop times for orbit
mvn_load_eph_brain.pro - loads ephemeris info into tplot vars
mvn_orbproj_panel_brain.pro - makes a projection plot
mvn_cylplot_panel_brain.pro - makes a cylindrical coords plot
mvn_groundtrack_panel_brain.pro - makes a groundtrack
mvn_threed_projection_panel_brain.pro - makes a 3D projection
ps_set.pro - establishes a postscript plot
plotposn.pro - positions a plot
cleanup.pro - resets plotting system variables
colorscale.pro - Dave Brain version of bytscl.pro
ctload.pro - Dave Fanning (coyote) version of loadct, with
brewer color mode enabled.
Caution:
1. VERY IMPORTANT! Three of the routines contain a hard link to a
file containing crustal field information. This link needs to be
edited for the location of the file on your machine.
Please check header comments for:
mvn_orbproj_panel_brain.pro
mvn_groundtrack_panel_brain.pro
mvn_threed_projection_panel_brain.pro
2. This routine make use of the ImageMagick "convert" utility,
installed on Dave's machine. This step is used when
converting the .eps file producded by the program into a .jpg
file. If you don't have "convert", simply comment out
the lines below that create the .jpg and remove the .eps
files. (lines ~219-223, right under ;;;Cleanup)
3. This is optimized to work on Dave's machine. No
guarantees about your machine!
Dave Brain
18 Jan, 2017 - Original version
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(See projects/emm/OrbitGeometryPlotFiles/mvn_orbit_survey_plot_ephemeris.pro)
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mvn_orbproj_panel_brain.pro
Procedure to create a 2D orbit projection plot for a MAVEN spaecraft
trajectory.
Syntax:
trange = mvn_orbproj_panel_brain, trange, res, /xy
Inputs:
trange - 2-elelment timerange over which to plot the
trajectory
res - The time resolution to use when plotting
xy, xz, yz - Boolean keywords indicating which
projection to plot. No default.
solidmars - Boolean: Treat Mars as a solid
object (don't plot trajectory behind
the planet). Default = not set
crustalfields - Three options:
0: no crustal field info used in plot
1: colored crustal field map used
image: a 3x 360x 180-element array
showbehind - Boolean: Even if Mars is solid, show the
trajectory behind the planet (using
different, smaller symbols). Default = not
set
[xy]range - 2-element bounds for the plot, in
Rm. Default = [-3,3]
showperiapsis - Boolean: Indicate the location of
periapsis. Default = not set
showticks - Indicate regular intervals (centered on
periapsis) along the trajectory. Default =
not set
tickinterval - The interval at which to show ticks, in
seconds. Default = 600
symsize - Symbol size to use for the
trajectory. Sizes of periapsis, interval
ticks, crustal fields all scale from
this. Default = 1.
charsize - Character size to use for plot
axes. Default = 1
noerase - Boolean, default = 0. Setting to 1
indicates that and plot currently on the
plot device should not be erased.
overlay - Structure describing the image to be
overlaid on the sphere of Mars. Contains
the following tags:
LAT: N-element array of latitudes of each
point to be painted on the sphere.
ELON: N-element array of East longitudes
of each point to be painted on the sphere
DATA: N-element array of values
(e.g. brightnesses etc.) to be painted on
the sphere
COLOR_TABLE: which color table is wanted
for the overlay
LOG: 0 or 1 for whether the data should be
plotted with a logarithmic color scale
RANGE: the color scale range for the data
night - If this keyword is set along with /yz,
that it will plot the view from the
nightside towards the dayside
Dependencies:
1. Berkeley MAVEN software
2. ctload.pro - routine from David Fanning (coyote) to load
color tables, including Brewer colors.
3. colorscale.pro - Dave Brain version of bytscl.pro
4. Map of crustal field Br - edit line ~177 to point to the
relevant location on your machine
Comments:
1. This was developed for use with a single orbit
trajectory. I'm not sure how it would work with
something larger.
2. This routine acts on tplot variables loaded using
mvn_load_eph_brain.pro. If it doesn't find them, it
will load them.
Dave Brain
12 January, 2017 -Initial version
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(See projects/emm/OrbitGeometryPlotFiles/mvn_orbproj_panel.pro)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
mvn_orbproj_panel_brain.pro
Procedure to create a 2D orbit projection plot for a MAVEN spaecraft
trajectory.
Syntax:
trange = mvn_orbproj_panel_brain, trange, res, /xy
Inputs:
trange - 2-elelment timerange over which to plot the
trajectory
res - The time resolution to use when plotting
xy, xz, yz - Boolean keywords indicating which
projection to plot. No default.
solidmars - Boolean: Treat Mars as a solid
object (don't plot trajectory behind
the planet). Default = not set
crustalfields - Boolean: Color Mars with a map of the
radial component of crustal magnetic field,
as measured by MGS. Default = 1
showbehind - Boolean: Even if Mars is solid, show the
trajectory behind the planet (using
different, smaller symbols). Default = not
set
[xy]range - 2-element bounds for the plot, in
Rm. Default = [-3,3]
showperiapsis - Boolean: Indicate the location of
periapsis. Default = not set
showticks - Indicate regular intervals (centered on
periapsis) along the trajectory. Default =
not set
tickinterval - The interval at which to show ticks, in
seconds. Default = 600
symsize - Symbol size to use for the
trajectory. Sizes of periapsis, interval
ticks, crustal fields all scale from
this. Default = 1.
charsize - Character size to use for plot
axes. Default = 1
noerase - Boolean, default = 0. Setting to 1
indicates that and plot currently on the
plot device should not be erased.
overlay - Structure describing the image to be
overlaid on the sphere of Mars. Contains
the following tags:
LAT: N-element array of latitudes of each
point to be painted on the sphere.
ELON: N-element array of East longitudes
of each point to be painted on the sphere
DATA: N-element array of values
(e.g. brightnesses etc.) to be painted on
the sphere
COLOR_TABLE: which color table is wanted
for the overlay
LOG: 0 or 1 for whether the data should be
plotted with a logarithmic color scale
RANGE: the color scale range for the data
night - If this keyword is set along with /yz,
that it will plot the view from the
nightside towards the dayside
Dependencies:
1. Berkeley MAVEN software
2. ctload.pro - routine from David Fanning (coyote) to load
color tables, including Brewer colors.
3. colorscale.pro - Dave Brain version of bytscl.pro
4. Map of crustal field Br - edit line ~177 to point to the
relevant location on your machine
Comments:
1. This was developed for use with a single orbit
trajectory. I'm not sure how it would work with
something larger.
2. This routine acts on tplot variables loaded using
mvn_load_eph_brain.pro. If it doesn't find them, it
will load them.
Dave Brain
12 January, 2017 -Initial version
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(See projects/emm/OrbitGeometryPlotFiles/mvn_orbproj_panel_brain.pro)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
mvn_orbproj_panel_brain.pro
Procedure to create a 2D orbit projection plot for a MAVEN spaecraft
trajectory
Syntax:
trange = mvn_orbproj_panel_brain, trange, res, /xy
Inputs:
trange - 2-elelment timerange over which to plot the
trajectory
res - The time resolution to use when plotting
xy, xz, yz - Boolean keywords indicating which
projection to plot. No default.
solidmars - Boolean: Treat Mars as a solid
object (don't plot trajectory behind
the planet). Default = not set
crustalfields - Boolean: Color Mars with a map of the
radial component of crustal magnetic field,
as measured by MGS. Default = 1
showbehind - Boolean: Even if Mars is solid, show the
trajectory behind the planet (using
different, smaller symbols). Default = not
set
[xy]range - 2-element bounds for the plot, in
Rm. Default = [-3,3]
showperiapsis - Boolean: Indicate the location of
periapsis. Default = not set
showticks - Indicate regular intervals (centered on
periapsis) along the trajectory. Default =
not set
tickinterval - The interval at which to show ticks, in
seconds. Default = 600
symsize - Symbol size to use for the
trajectory. Sizes of periapsis, interval
ticks, crustal fields all scale from
this. Default = 1.
charsize - Character size to use for plot
axes. Default = 1
noerase - Boolean, default = 0. Setting to 1
indicates that and plot currently on the
plot device should not be erased.
Dependencies:
1. Berkeley MAVEN software
2. ctload.pro - routine from David Fanning (coyote) to load
color tables, including Brewer colors.
3. colorscale.pro - Dave Brain version of bytscl.pro
4. Map of crustal field Br - edit line ~177 to point to the
relevant location on your machine
Comments:
1. This was developed for use with a single orbit
trajectory. I'm not sure how it would work with
something larger.
2. This routine acts on tplot variables loaded using
mvn_load_eph_brain.pro. If it doesn't find them, it
will load them.
Dave Brain
12 January, 2017 -Initial version
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(See projects/emm/OrbitGeometryPlotFiles/mvn_orbproj_panel_emus.pro)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
mvn_threed_projection_panel_brain.pro
Procedure to create a 2D orbit projection plot for a MAVEN spaecraft
trajectory.
Syntax:
trange = mvn_orbproj_panel_brain, trange, res, /xy
Inputs:
trange - 2-elelment timerange over which to plot the
trajectory
res - The time resolution to use when plotting
[xy]range - 2-element bounds for the plot, in
Rm. Default = [-3,3]
obstime - The time to use when orienting Mars with
respect to the Sun. Default = mean(trange)
obspos - explicitly defined the observer's
position in MSO coordinates
showperiapsis - Boolean: Indicate the location of
periapsis. Default = not set
showticks - Indicate regular intervals (centered on
periapsis) along the trajectory. Default =
not set
tickinterval - The interval at which to show ticks, in
seconds. Default = 600
symsize - Symbol size to use for the
trajectory. Sizes of periapsis, interval
ticks, crustal fields all scale from
this. Default = 1.
charsize - Character size to use for plot
axes. Default = 1
noerase - Boolean, default = 0. Setting to 1
indicates that and plot currently on the
plot device should not be erased.
Dependencies:
1. Berkeley MAVEN software
2. ctload.pro - routine from David Fanning (coyote) to load
color tables, including Brewer colors.
3. colorscale.pro - Dave Brain version of bytscl.pro
4. Map of crustal field Br - edit line ~178 to point to the
relevant location on your machine
Comments:
1. This was developed for use with a single orbit
trajectory. I'm not sure how it would work with
something larger.
2. This routine acts on tplot variables loaded using
mvn_load_eph_brain.pro. If it doesn't find them, it
will load them.
Dave Brain
12 January, 2017 -Initial version
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(See projects/emm/OrbitGeometryPlotFiles/mvn_threed_projection_panel.pro)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
mvn_threed_projection_panel_brain.pro
Procedure to create a 2D orbit projection plot for a MAVEN spaecraft
trajectory.
Syntax:
trange = mvn_orbproj_panel_brain, trange, res, /xy
Inputs:
trange - 2-elelment timerange over which to plot the
trajectory
res - The time resolution to use when plotting
[xy]range - 2-element bounds for the plot, in
Rm. Default = [-3,3]
obstime - The time to use when orienting Mars with
respect to the Sun. Default = mean(trange)
obspos - explicitly defined the observer's
position in MSO coordinates
showperiapsis - Boolean: Indicate the location of
periapsis. Default = not set
showticks - Indicate regular intervals (centered on
periapsis) along the trajectory. Default =
not set
tickinterval - The interval at which to show ticks, in
seconds. Default = 600
symsize - Symbol size to use for the
trajectory. Sizes of periapsis, interval
ticks, crustal fields all scale from
this. Default = 1.
charsize - Character size to use for plot
axes. Default = 1
noerase - Boolean, default = 0. Setting to 1
indicates that and plot currently on the
plot device should not be erased.
Dependencies:
1. Berkeley MAVEN software
2. ctload.pro - routine from David Fanning (coyote) to load
color tables, including Brewer colors.
3. colorscale.pro - Dave Brain version of bytscl.pro
4. Map of crustal field Br - edit line ~178 to point to the
relevant location on your machine
Comments:
1. This was developed for use with a single orbit
trajectory. I'm not sure how it would work with
something larger.
2. This routine acts on tplot variables loaded using
mvn_load_eph_brain.pro. If it doesn't find them, it
will load them.
Dave Brain
12 January, 2017 -Initial version
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(See projects/emm/OrbitGeometryPlotFiles/mvn_threed_projection_panel_brain.pro)
NAME:
SYMCAT
PURPOSE:
This function provides a symbol catalog for specifying a number of plotting symbols.
AUTHOR:
FANNING SOFTWARE CONSULTING
David Fanning, Ph.D.
1645 Sheely Drive
Fort Collins, CO 80526 USA
Phone: 970-221-0438
E-mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com
CATEGORY:
Graphics
CALLING SEQUENCE:
Plot, findgen(11), PSYM=SYMCAT(theSymbol)
To connect symbols with lines, use a negative value for the PSYM keyword:
Plot, findgen(11), PSYM=-SYMCAT(theSymbol)
INPUTS:
theSymbol: The number of the symbol you wish to use. Possible values are:
0 : No symbol.
1 : Plus sign.
2 : Asterisk.
3 : Dot (period).
4 : Open diamond.
5 : Open upward triangle.
6 : Open square.
7 : X.
8 : Defined by the user with USERSYM.
9 : Open circle.
10 : Histogram style plot.
11 : Open downward triangle.
12 : Open rightfacing triangle.
13 : Open leftfacing triangle.
14 : Filled diamond.
15 : Filled square.
16 : Filled circle.
17 : Filled upward triangle.
18 : Filled downward triangle.
19 : Filled rightfacing triangle.
20 : Filled leftfacing triangle.
21 : Hourglass.
22 : Filled Hourglass.
23 : Bowtie.
24 : Filled bowtie.
25 : Standing Bar.
26 : Filled Standing Bar.
27 : Laying Bar.
28 : Filled Laying Bar.
29 : Hat up.
30 : Hat down.
31 : Hat right.
32 : Hat down.
33 : Big cross.
34 : Filled big cross.
35 : Circle with plus.
36 : Circle with X.
37 : Upper half circle.
38 : Filled upper half circle.
39 : Lower half circle.
40 : Filled lower half circle.
41 : Left half circle.
42 : Filled left half circle.
43 : Right half circle.
44 : Filled right half circle.
45 : Star.
46 : Filled star.
RETURN VALUE:
The return value is whatever is appropriate for passing along
to the PSYM keyword of (for example) a PLOT or OPLOT command.
For the vast majority of the symbols, the return value is 8.
KEYWORDS:
None.
MODIFICATION HISTORY:
Written by David W. Fanning, 2 September 2006. Loosely based on the
program MC_SYMBOL introduced on the IDL newsgroup 1 September 2006,
and MPI_PLOTCONFIG__DEFINE from the Coyote Library.
2 October 2006. DWF. Modified to allow PSYM=8 and PSYM=10 to have
their normal meanings. This shifted previous symbols by two values
from their old meanings. For example, an hourglass went from symbol
number 19 to 21.
(See projects/emm/OrbitGeometryPlotFiles/symcat.pro)