4.20 sddscongen

• description: Creates an SDDS data set by evaluating an rpn expression over a defined 2 dimensional grid. This data set may be plotted using sddscontour.
• example: This will generate a two-dimensional color-shaded map of the function sin(4π(x2 + y2)) on the region x:[-1, 1] and y:[-1, 1]:

  sddscongen example.sdds -xRange=-1,1,101 -yRange=-1,1,101
  -zEquation="x x * y y * + 4 * pi * sin"
  sddscontour example.sdds -shade example.sdds -equalAspect

• synopsis:

  sddscongen outputfile -xRange=lower,upper,nPoints -yrange=lower,upper,nPoints -zEquation=rpnExpression [-rpnCommand=rpnExpression] [-rpnDefinitions=rpn-defnsFile]

• switches:
  • xRange=lower,upper,nPoints, yRange=lower,upper,nPoints — Specifies the 2 dimensional grid over which data is generated. x is the horizontal variable and y the vertical.
  • -zEquation=rpnExpression — Specifies the rpn expression that is evaluated at each point of the grid.
  • -rpnCommand=rpnExpression — Specifies the name of a file containing rpn input. The named file is read before any other operations are performed.
  • -rpnDefinitions=rpn-defnsFile — Specifies a string to submit to rpn prior to beginning evaluation of the equation on the grid.
• see also:
  • sddscontour
  • rpn
• author: M. Borland, ANL/APS.