How to increase the plot height in panel plot...

I am paneling 4 plots....(/2,2/)...First two plots is having longitude
varies from 30E to 90W and Last two plots is having longitude from 30E to
150E..Both is having latitude varies from -30 to 30. So the first two plots
is having heights less compared to last two plots...I want to increase the
height of first to plots and make similar to last two. I used res1@vpWidthF=
0.60 and res1@vpHeightF = 0.80 ..But at this time it is not working...It
doesn't make any difference even if we use different values..

Any help would be appreciated...
Thanks....

load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
begin
;**************************************************************

in1=addfile("atm1.nc","r")
in2=addfile("atm2.nc","r")
in3=addfile("atm3.nc","r")
in4=addfile("atm4.nc","r")

var1=in1->com
var1_sig=in1->com_sig

var2=in2->com
var2_sig=in2->com_sig

var3=in3->com
var3_sig=in3->com_sig

var4=in4->com
var4_sig=in4->com_sig
;===============================================================================
plot=new(4,graphic)
wks=gsn_open_wks("eps","test")
gsn_define_colormap(wks,"BlueRed")

res1 = True
res1@vpWidthF = 0.60
res1@vpHeightF = 0.80

res1@gsnDraw = False
res1@gsnFrame = False
res1@cnFillOn=True
res1@gsnSpreadColors = True
res1@mpCenterLonF=180
res1@mpMinLonF=30
res1@mpMaxLonF=270
res1@mpMinLatF=-30
res1@mpMaxLatF=30

res2=True
res2@gsnDraw = False
res2@gsnFrame = False

res2@cnLineLabelsOn = False
res2@gsnContourNegLineDashPattern = 2

cntr0=gsn_csm_contour(wks,var1,res2)
base0=gsn_csm_contour_map_ce(wks,var1_sig,res1) ; lon from 30E to 90W
overlay(base0,cntr0)
plot(0)=base0

cntr1=gsn_csm_contour(wks,var2,res2)
base1=gsn_csm_contour_map_ce(wks,var2_sig,res1)
overlay(base1,cntr1)
plot(1)=base1

res1@mpMinLonF=30
res1@mpMaxLonF=150
res1@mpMinLatF=-30
res1@mpMaxLatF=30

cntr2=gsn_csm_contour(wks,var3,res2)
base2=gsn_csm_contour_map_ce(wks,var3_sig,res1) ; lon from 30E to
150E
overlay(base2,cntr2)
plot(2)=base2

cntr3=gsn_csm_contour(wks,var4,res2)
base3=gsn_csm_contour_map_ce(wks,var4_sig,res1)
overlay(base3,cntr3)
plot(3)=base3

;======================================================================
resP = True
;resP@gsnPanelDebug=True
gsn_panel(wks,plot,(/2,2/),resP)
end

-- 
**********************************
Sabeerali
Climate and Global Modeling Division
Indian Institute of Tropical Meteorology
Pashan, Pune, 411 008
****************************************

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Received on Fri May 7 04:40:19 2010