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**NAME**

plsurf3dl- Plot shaded 3-d surface plot for z[x][y] with y index limits

**SYNOPSIS**

plsurf3dl(x,y,z,nx,ny,opt,clevel,nlevel,indexxmin,indexxmax,indexymin,indexymax)

**DESCRIPTION**

This variant ofplsurf3d(3plplot) (see that function's documentation for more details) should be suitable for the case where the area of thex,ycoordinate grid wherezis defined can be non-rectangular. The limits of that grid are provided by the parametersindexxmin,indexxmax,indexymin, andindexymax. Redacted form:plsurf3dl(x,y,z,opt,clevel,indexxmin,indexymin,indexymax)This function is not used in any examples.

**ARGUMENTS**

x(const PLFLT *, input) Pointer to set of x coordinate values at which the function is evaluated.y(const PLFLT *, input) Pointer to set of y coordinate values at which the function is evaluated.z(const PLFLT * const *, input) Pointer to a vectored two-dimensional array with set of function values.nx(PLINT, input) Number ofxvalues at which function is evaluated.ny(PLINT, input) Number ofyvalues at which function is evaluated.opt(PLINT, input) Determines the way in which the surface is represented. To specify more than one option just add the options, e.g. FACETED + SURF_CONTopt=FACETED: Network of lines is drawn connecting points at which function is defined.opt=BASE_CONT: A contour plot is drawn at the base XY plane using parametersnlevelandclevel.opt=SURF_CONT: A contour plot is drawn at the surface plane using parametersnlevelandclevel.opt=DRAW_SIDES: draws a curtain between the base XY plane and the borders of the plotted function.opt=MAG_COLOR: the surface is colored according to the value of Z; if MAG_COLOR is not used, then the default the surface is colored according to the intensity of the reflected light in the surface from a light source whose position is set usingpllightsource(3plplot).clevel(const PLFLT *, input) Pointer to the array that defines the contour level spacing.nlevel(PLINT, input) Number of elements in the clevel array.indexxmin(PLINT, input) The index value (which must be ≥ 0) that corresponds to the firstxindex wherezis defined.indexxmax(PLINT, input) The index value (which must be ≤nx) which corresponds (by convention) to one more than the lastxindex value wherezis defined.indexymin(const PLINT *, input) Array ofyindex values which all must be ≥ 0. These values are the firstyindex wherezis defined for a particularxindex in the range fromindexxmintoindexxmax-1. The dimension ofindexyminisindexxmax.indexymax(const PLINT *, input) Array ofyindex values which all must be ≤ny. These values correspond (by convention) to one more than the lastyindex wherezis defined for a particularxindex in the range fromindexxmintoindexxmax-1. The dimension ofindexymaxisindexxmax.

**AUTHORS**

Many developers (who are credited at http://plplot.sourceforge.net/credits.php) have contributed to PLplot over its long history.

**SEE** **ALSO**

PLplot documentation at http://plplot.sourceforge.net/documentation.php. February, 2016 PLSURF3DL(3plplot)