libncarg-data 6.1.2-7 / usr / share / ncarg / nclex / ngmath / nm04n.ncl

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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;                                                                       ;
;                Copyright (C)  1997                                    ;
;        University Corporation for Atmospheric Research                ;
;                All Rights Reserved                                    ;
;                                                                       ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
;   File:       nm04n.ncl
;
;   Author:     Fred Clare (converted to NCL by Mary Haley)
;           National Center for Atmospheric Research
;           PO 3000, Boulder, Colorado
;
;   Date:       Tue Dec 16 10:18:13 MST 1997
;
;   Description: Simple 3D interpolation.
;

begin

NUM = 1000
NX = 21
NY = 21
NZ = 21
RAND_MAX = 32767.0

xi = new((/NUM/),float)
yi = new((/NUM/),float)
zi = new((/NUM/),float)
u = new((/NUM/),float)

xo = new((/NX/),float)
yo = new((/NY/),float)
zo = new((/NZ/),float)

xmin = -2.0
ymin = -2.0
zmin = -2.0
xmax =  2.0
ymax =  2.0
zmax =  2.0

;
; Create random data in three space and define a function.
;
rand1 = new((/NUM/),float)
rand2 = new((/NUM/),float)
rand3 = new((/NUM/),float)
srand(1)
do i=0,NUM-1
  rand1(i) = rand
  rand2(i) = rand
  rand3(i) = rand
end do
xi = xmin+(xmax-xmin)*(rand1 / RAND_MAX)
yi = ymin+(ymax-ymin)*(rand2 / RAND_MAX)
zi = zmin+(zmax-zmin)*(rand3 / RAND_MAX)

u = xi*xi + yi*yi + zi*zi
;
; Create the output grid.
;
ii = fspan(0,20.,21)
xo = xmin + (ii/(NX-1)) * (xmax-xmin)
yo = ymin + (ii/(NY-1)) * (ymax-ymin)
zo = zmin + (ii/(NZ-1)) * (zmax-zmin)

;
; Interpolate.
;
output = dsgrid3s(xi, yi, zi, u, xo, yo, zo)

wks_type = "ncgm"

if (str_lower(wks_type).eq."ncgm") then
;
; Create an ncgmWorkstation object.
;
  wid = create "dsgrid" ncgmWorkstationClass defaultapp
      "wkMetaName" : "nm04n.ncgm"
  end create
end if
if (str_lower(wks_type).eq."x11") then
;
; Create an X11 workstation.
;
  wid = create "dsgrid" windowWorkstationClass defaultapp
    "wkPause" : "True"
  end create
end if
if (str_lower(wks_type).eq."oldps") then
;
; Create an older-style PostScript workstation.
;
  wid = create "dsgrid" psWorkstationClass defaultapp
    "wkPSFileName" : "nm04n.ps"
  end create
end if
if (str_lower(wks_type).eq."oldpdf") then
;
; Create an older-style PDF workstation.
;
  wid = create "dsgrid" pdfWorkstationClass defaultapp
    "wkPDFFileName" : "nm04n.pdf"
  end create
end if
if (str_lower(wks_type).eq."pdf".or.str_lower(wks_type).eq."ps") then
;
; Create a cairo PS/PDF Workstation object.
;
  wid = create "dsgrid" documentWorkstationClass defaultapp
    "wkFileName" : "nm04n"
    "wkFormat" : wks_type
  end create
end if
if (str_lower(wks_type).eq."png") then
;
; Create a cairo PNG Workstation object.
;
  wid = create "dsgrid" imageWorkstationClass defaultapp
    "wkFileName" : "nm04n"
    "wkFormat" : wks_type
  end create
end if

;output!0 = "i"
;output!1 = "j"
;output!2 = "k"
tdez3d(wid,xo,yo,zo,output,3.,2.,-35.,65.,6)
frame(wid)

end

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