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Plot Commands

As described in Chapter 3, the MIDAS data structures include frames, masks, tables, catalogues, descriptors, and keywords. With the exception of the masks and catalogues, the plot package is able to plot the data stored in these structures. Data can be plotted with PLOT/ as well as with OVERPLOT/ commands. In the first case, MIDAS will start a complete new plot (e.g. a graphic terminal screen will be erased and old plotfiles will be deleted); in the latter one MIDAS will extend the existing plot information without erasing the results of previous plot commands.

In addition of the plot commands that enable the user to plot data command are available to produce coordinate box(es) within subsequently data can be overplotted, and commands to add text, symbols, and (grid) lines. An overview of the commands is given below.
PLOT/AXES plot a box with tick marks, tick labels and axes labels
OVERPLOT/AXES overplot a box with tick marks, tick labels and axes labels
   
PLOT/CONTOUR plot contours of a two-dimensional image
OVERPLOT/CONTOUR overplot contours of a two-dimensional image
PLOT/COLUMN plot a column of an image
OVERPLOT/COLUMN overplot a column of an image
PLOT/DESCRIPTOR plot an entry in a descriptor
OVERPLOT/DESCRIPTOR overplot an entry in a descriptor
PLOT/GRAY plot gray scale map of a two-dimensional image
OVERPLOT/GRAY overplot gray scale map of a two-dimensional image
PLOT/HISTOGRAM plot a histogram of a table column or image
OVERPLOT/HISTOGRAM overplot a histogram of a table column or image
PLOT/KEYWORD plot the contents of a keyword
OVERPLOT/KEYWORD overplot the contents of a keyword
PLOT/PERSPECTIVE perspective plotting (3-dim.) of an image
PLOT/ROW plot a row (line) of an image
OVERPLOT/ROW overplot a row (line) of an image
PLOT/TABLE plot table data
OVERPLOT/TABLE overplot table data
OVERPLOT/ERROR overplot table column containing errors
PLOT/VECTOR plot vector map from two 2-dim. images with smoothing option
OVERPLOT/VECTOR overplot vector map from two 2-dim. images with smoothing option
   
LABEL/GRAPHIC plot text in an existing plot
OVERPLOT/LINE overplot a line in an existing plot
OVERPLOT/SYMBOL overplot a symbol in an existing plot
OVERPLOT/GRID overplot a grid, by connecting tickmarks



 
next up previous contents index
Next: Plotting and overplotting axes Up: Graphic Facilities Previous: ASSIGN/GRAPHIC and COPY/GRAPHIC
Petra Nass
1999-06-09