StreamDensityPlot (Built-in Mathematica Symbol)

StreamDensityPlot[{{v_x, v_y}, s}, {x, x_min, x_max}, {y, y_min, y_max}] generates a stream plot of the vector field {v_x, v_y} as a function of x and y, superimposed on a ...

SystemDialogInput (Built-in Mathematica Symbol)

SystemDialogInput["type"] brings up an interactive system dialog and returns the value chosen in the dialog. SystemDialogInput["type", init] uses init as the initial setting ...

SystemsModelExtract (Built-in Mathematica Symbol)

SystemsModelExtract[sys, {i_1, i_2, ...}] extracts the subsystem of the StateSpaceModel or TransferFunctionModel object sys associated with inputs at position ...

$DistributedContexts (Built-in Mathematica Symbol)

$DistributedContexts is the default value of the DistributedContexts option of functions such as ParallelTable and ParallelMap.

$MachinePrecision (Built-in Mathematica Symbol)

$MachinePrecision gives the number of decimal digits of precision used for machine-precision numbers.

$MessageGroups (Built-in Mathematica Symbol)

$MessageGroups is the list of rules that gives named message groups used in functions like On and Quiet.

Defining Numerical Values (Mathematica Tutorial)

If you make a definition such as f[x_]:=value, Mathematica will use the value you give for any f function it encounters. In some cases, however, you may want to define a ...

Functions as Procedures (Mathematica Tutorial)

In many kinds of calculations, you may find yourself typing the same input to Mathematica over and over again. You can save yourself a lot of typing by defining a function ...

Generating C and Fortran Expressions (Mathematica Tutorial)

If you have special-purpose programs written in C or Fortran, you may want to take formulas you have generated in Mathematica and insert them into the source code of your ...

Generating Unstructured Output (Mathematica Tutorial)

The functions described in "Textual Input and Output Overview" determine how expressions should be formatted when they are printed, but they do not actually cause anything to ...