From:
Mr. Rolando S. Balotro
University of the Ryukyus
International House B507
Senbaru 1 Nishihara-cho
Nakagami-gun Okinawa 903-01, Japan.
E-mail Address: e937135 AT unknown
Dear Sir:
Warm Greetings from Okinawa, Japan.
I am foreign student here in the University of the Ryukyus currently
doing my MSc in Physical Oceanography.
Our department recently purchased the Ncar Graphics Software Package.
The software has been very helpful so far but I have been experiencing a
difficulty in applying the software to our storm surge model.
The problem involves the plotting of sea-elevation contours correctly
between the land and the ocean boundary.
I have written an e-mail to the consulting group of the software package
and they refer me to the local site representative responsible for the
purchase of the product. However, the local site representative cannot
communicate in English and they are not that versed in using the software.
My problem is how to 'force' the contour subroutine of ncarg to follow
the boundary that separates the ocean from the land. In my experiment there
are different shapes of coastlines (e.g. straight, rectangular, triangular).
The conpack subroutines of ncarg makes some unnecessary interpolation
between the land where the sea-elevations are naturally zero and the ocean
where they are not. How do you make the contours discontinue at the boundary?
Permit me to include my contouring program and an example of data set
for your perusal.
Kindly extend your little patience in going over my algorithm.
Thank you very much for your cooperation.
Respectfully yours,
Rolando S. Balotro
***Program:
PROGRAM contgrpx
PARAMETER (K= 20,N=30,LRWK=1000,LIWK=1000)
REAL Z(K,N), RWRK(LRWK)
INTEGER M, IWRK(LIWK)
Common/Blk1/ Z(K,N), RWRK(LRWK)
Common/Blk2/ M, IWRK(LIWK)
Common/Blk3/ CIT(10),LIT(10)
C Read Data
CALL GETDAT (Z, K, M, N)
CALL OPNGKS
C Frame Size
CALL CPSETR ('VPB - VIEWPORT BOTTOM EDGE',0.1)
C Draw Coastline Boundary
CALL Bndry
C Draw Contours
CALL Plot
C Contour Title
CALL SET(0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 1)
CALL PLCHHQ(0.5, 0.98,
& 'Sea Elevation (cm)', 0.014, 0.0, 0.0)
C XY-Label
CALL PLCHHQ(0.145,0.53,'Coastal Distance (km)', 0.01,90.0,0.0)
CALL PLCHHQ(0.5,0.025,'Cross-Shelf Distance (km)',0.01, 0.0,0.0)
C Tick Marks
CALL CPSETR ('XC1 - X COORDINATE AT INDEX 1',2.5)
CALL CPSETR ('XCM - X COORDINATE AT INDEX M',97.5)
CALL CPSETR ('YC1 - Y COORDINATE AT INDEX 1',2.5)
CALL CPSETR ('YCN - Y COORDINATE AT INDEX N',147.5)
CALL CPRECT(Z,K,M,N,RWRK,LRWK,IWRK,LIWK)
CALL LABMOD('(F4.1)','(F5.1)',0,0,10,10,0,0,1)
CALL GRIDAL(K-1,0,N-1,0,1,1,5,0.,0.)
CALL FRAME
CALL CLSGKS
STOP
END
C***
SUBROUTINE Bndry
Parameter (LMAP = 50000, NMAP = 6, NGRPS = 2)
Real X(NMAP), Y(NMAP)
c Straight Coast:
c Data X / 0.266, 0.266/
c Data Y / 0.1, 0.95/
c Triangular Coast
c Data X / 0.471, 0.471, 0.266, 0.471, 0.471/
c Data Y / 0.1, 0.319, 0.5106, 0.701, 0.95/
c Rectangular Coast
Data X / 0.471, 0.471, 0.266, 0.266, 0.471, 0.471/
Data Y / 0.1, 0.319, 0.319, 0.701, 0.701, 0.95/
CALL GSPLCI (1)
CALL CURVE (X,Y,NMAP)
Return
End
C***
SUBROUTINE GETDAT (Z, K, M, N)
INTEGER I,J,K,M,N
Character*50 FilName
REAL Z(K,N)
C Reading Existing Datafile
Write(*,*) ''
Write(*,*) 'Enter FileName .....', FilName
Read(*,*) FilName
Write(*,*) 'FileName Entered is...... ', FilName
Write(*,*) ''
M=K
Open(unit = 1, file = FilName)
Do J = 1, N
Do I = 1, M
Read(1,*) J,I, Z(I,J)
End Do
End Do
RETURN
END
C***
Subroutine Plot
PARAMETER (K= 20,N=30,LRWK=1000,LIWK=1000)
REAL Z(K,N), RWRK(LRWK)
INTEGER M, IWRK(LIWK)
Common/Blk1/ Z(K,N), RWRK(LRWK)
Common/Blk2/ M, IWRK(LIWK)
Common/Blk3/ CIT(10),LIT(10)
DATA CIT /1.,2.,3.,4.,5.,6.,7.,8.,9.,0./
DATA LIT /2, 2, 2, 2, 2, 2, 2, 2, 2, 0 /
C Draw Contour
DO 101 I=1,10
CALL CPSETI ('PAI - PARAMETER ARRAY INDEX',I)
CALL CPSETR ('CIT - CONTOUR INTERVAL TABLE',CIT(I))
CALL CPSETI ('LIT - LABEL INTERVAL TABLE',LIT(I))
101 CONTINUE
CALL GSCLIP(0)
CALL CPRECT(Z,K,M,N,RWRK,LRWK,IWRK,LIWK)
CALL CPBACK(Z, RWRK, IWRK)
CALL CPCLDR(Z,RWRK,IWRK)
CALL GETSET(VPL,VPR,VPB,VPT,WL,WR,WB,WT,LL)
C Contour MaxMin Label (with H/L marks)
CALL CPSETI ('ILP - INFORMATIONAL LABEL POSITIONING',-2)
CALL CPSETR ('ILX - INFORMATIONAL LABEL X COORDINATE',.98)
CALL CPSETR ('ILY - INFORMATIONAL LABEL Y COORDINATE',.02)
CALL CPLBDR(Z,RWRK,IWRK)
Return
End
***Data Set: 20 x 30 Grid
1 1 0.0000000E+00
1 2 0.0000000E+00
1 3 0.0000000E+00
1 4 0.0000000E+00
1 5 0.0000000E+00
1 6 0.0000000E+00
1 7 0.0000000E+00
1 8 0.0000000E+00
1 9 0.0000000E+00
1 10 -14.26559
1 11 -10.18149
1 12 -7.409540
1 13 -5.339708
1 14 -3.665264
1 15 -2.713118
1 16 -1.765206
1 17 -1.168913
1 18 -0.5928035
1 19 -0.3119235
1 20 0.0000000E+00
2 1 0.0000000E+00
2 2 0.0000000E+00
2 3 0.0000000E+00
2 4 0.0000000E+00
2 5 0.0000000E+00
2 6 0.0000000E+00
2 7 0.0000000E+00
2 8 0.0000000E+00
2 9 0.0000000E+00
2 10 -14.55320
2 11 -10.28181
2 12 -7.459708
2 13 -5.375862
2 14 -3.689101
2 15 -2.731842
2 16 -1.792655
2 17 -1.207952
2 18 -0.6325005
2 19 -0.3370233
2 20 0.0000000E+00
3 1 0.0000000E+00
3 2 0.0000000E+00
3 3 0.0000000E+00
3 4 0.0000000E+00
3 5 0.0000000E+00
3 6 0.0000000E+00
3 7 0.0000000E+00
3 8 0.0000000E+00
3 9 0.0000000E+00
3 10 -13.84795
3 11 -9.526680
3 12 -6.934684
3 13 -4.685082
3 14 -3.624614
3 15 -2.426580
3 16 -1.845260
3 17 -1.392769
3 18 -1.085755
3 19 -0.5668596
3 20 0.0000000E+00
4 1 0.0000000E+00
4 2 0.0000000E+00
4 3 0.0000000E+00
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4 5 0.0000000E+00
4 6 0.0000000E+00
4 7 0.0000000E+00
4 8 0.0000000E+00
4 9 0.0000000E+00
4 10 -13.26169
4 11 -8.629478
4 12 -5.750474
4 13 -4.023602
4 14 -2.938781
4 15 -2.085639
4 16 -1.731528
4 17 -1.084947
4 18 -0.7514914
4 19 -0.3475578
4 20 0.0000000E+00
5 1 0.0000000E+00
5 2 0.0000000E+00
5 3 0.0000000E+00
5 4 0.0000000E+00
5 5 0.0000000E+00
5 6 0.0000000E+00
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5 10 -10.95279
5 11 -6.327721
5 12 -3.766437
5 13 -2.846082
5 14 -1.818387
5 15 -1.312141
5 16 -1.033790
5 17 -0.8062045
5 18 -0.5924687
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5 20 0.0000000E+00
6 1 0.0000000E+00
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6 4 0.0000000E+00
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6 6 0.0000000E+00
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6 9 0.0000000E+00
6 10 -6.843861
6 11 -2.726650
6 12 -0.9519743
6 13 -0.2494319
6 14 -8.2413312E-03
6 15 -5.1464316E-02
6 16 0.1100482
6 17 -3.6885380E-03
6 18 5.4599363E-02
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6 20 0.0000000E+00
7 1 0.0000000E+00
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7 10 -1.014963
7 11 2.020767
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7 15 1.875700
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7 17 0.8720375
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7 20 0.0000000E+00
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8 10 7.165321
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8 13 6.449591
8 14 5.352706
8 15 3.977431
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8 17 1.918578
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8 19 0.3960940
8 20 0.0000000E+00
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9 20 0.0000000E+00
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10 4 8.562011
10 5 13.35598
10 6 16.72321
10 7 19.27703
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10 20 0.0000000E+00
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This archive was generated by hypermail 2b29 : Wed Jun 28 2000 - 09:40:25 MDT