function?[Xout?Yout?Zout]?=?polar3d（Zintheta_mintheta_maxRho_minRho_maxmeshscalevarargin）
%
%?POLAR3D???Plots?a?3D?polar?surface.
%?
%???????????POLAR3D（Zintheta_mintheta_maxRho_minRho_maxmeshscale）?plots?
%???????????the?profiles?as?a?mesh?plot?for?Zin?between?radii?Rho_min?and?
%???????????Rho_max?for?polar?angles?equally?spaced?between?theta_min?and?theta_max.
%?
%???????????POLAR3D（Zintheta_mintheta_maxRho_minRho_maxmeshscaleplotspec）
%???????????plots?the?profiles?Zin?between?radii?Rho_min?and?Rho_max?for?
%???????????polar?angles?between?theta_min?and?theta_max?with?a?plot?type?
%???????????specification.?If?plotspec?=?‘surf‘?a?standard?Matlab?surface?
%???????????is?plottedwhereas?‘mesh‘?‘surfc‘?or?‘meshc‘?will?plot?mesh?
%???????????surface?with?countour?or?mesh?with?contour?respectively.
%???????????The?size?of?the?squares?on?the?mesh?or?surf?plots?is?determined?
%???????????by?meshscale.?The?default?plot?is?a?mesh?plot.??
%????????????
%?
%???????????[XoutYoutZout]?=?POLAR3D（Zintheta_mintheta_maxRho_min
%???????????Rho_max?meshscale）returns?Zout?values?corresponding?to?the
%???????????Cartesian?positions?（XoutYout）.?????????
%?
%?SYNTAX????polar3d（Zintheta_mintheta_maxRho_minRho_maxmeshscale）
%???????????polar3d（Zintheta_mintheta_maxRho_minRho_maxmeshscaleplotspec）
%???????????polar3d（Zintheta_mintheta_maxRho_minRho_maxmeshscaleinterpspec）
%???????????polar3d（Zintheta_mintheta_maxRho_minRho_maxmeshscale?plotspecinterpspec）
%???????????[XoutYoutZout]?=?polar3d（Zintheta_mintheta_maxRho_minRho_max...）
%???????????
%?INPUT?????Zin?????????input?magnitude?profiles?where?each?column?in?Zin?is?
%???????????????????????assumed?to?represent?the?radial?information?in?the
%???????????????????????plot?i.e.?each?column?represents?the?information?
%???????????????????????along?a?radial?line?defined?by?theta?where?theta?
%???????????????????????varies?between?theta_min?and?theta_max.
%???????????????????????
%???????????????????????Zin?is?a?（M?x?N）?matrix?where?M?and?N?are?not?
%???????????????????????necessarily?equal.?If?M?is?not?equal?to?N?then?the
%???????????????????????data?are?interpolated?to?make?them?equal.?The?final
%???????????????????????size?is?determined?by?the?larger?value?of?（MN）.
%?
%???????????????????????The?N?columns?of?Zin?are?assumed?to?be?equally
%???????????????????????spaced?measurements?of?the?radial?components?where
%???????????????????????Zin（11）?corresponds?to?（theta_minRho_max）?and?
%???????????????????????Zin（M1）?corresponds?to?（theta_minRho_min）?and?so?on.?
%???????????????????????Zin（1N）?corresponds?to?（theta_maxRho_max）?and?
%???????????????????????Zin（MN）?corresponds?to?（theta_maxRho_min）.?Theta?
%???????????????????????increases?in?the?anticlockwise?direction.
%?
%???????????theta_min???the?lower?value?in?radians?of?the?angular?range?
%???????????????????????over?which?the?data?is?defined.?Thet