[ncl-talk] contour plot: explicit tickmark labels and repositioning XBString

[Tabish Ansari]

It would also be great if I could superpose a grid of dotted lines
(following the dimensions of the data, in this case 12x12) on top of the
contour plot.

Cheers,

Tabish

Tabish U Ansari
PhD student, Lancaster Environment Center
Lancaster Univeristy
Bailrigg, Lancaster,
LA1 4YW, United Kingdom


On Thu, 25 Apr 2019 at 16:44, Tabish Ansari <tabishumaransari at gmail.com>
wrote:

> Hi
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> I'm trying to make a contour plot from a 12x12 matrix which I'm reading
> from a table. The x and y axes are automatically labelled from 0 to 12
> based on the default index numbers of the data (0,11). However, I want to
> explicitly define tickmark labels starting from 0 to 120 with each grid
> representing a change of 10 units. I tried using *res at tmXBMode  =
> "Explicit" and res at tmXBValues = ispan(0,120,10) *but that then shows only
> two tickmarks (0 and 10) adapted to the index numbers. I have pasted my
> script below and attached the plot.
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> *load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"load
> "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"beginncol = 2 ; THE TWO
> COLUMNS REPRESENT 2 DAYS: 24TH AND 30TH OCTOBERdata =
> readAsciiTable("/home/tabish/Emulation/EmulPreds_responsesurface_Run2.csv",
> ncol, "float", 1); THIS WILL IGNORE THE 1ST ROW WHICH IS
> HEADERdata at _FillValue = -999print("table read-in
> successfully")printVarSummary(data);TRANSFORMING 144X1 STRUCTURE TO 12X12
> STRUCTURE FOR CONTOUR PLOTc=0a = new((/12,12/),float)do i=0,11 do j=0,11
> a(i,j) = data(c,0)  c = c+1 end doend do  wks = gsn_open_wks("x11","RS") ;
> Send graphics to PNG file; Set up resources.  res                     =
> True  res at gsnMaximize         = True  res at cnFillOn            = True
> ; Turn on contour fill  res at cnFillPalette       = "amwg"      ; Set color
> map  res at tiYAxisString       = "Parameter 2"  res at tiXAxisString       =
> "Parameter 1"  res at cnFillMode          = "RasterFill"
> res at cnLinesOn           = False  ;res at tmXBMode            = "Explicit"
> ;res at tmXBValues = ispan(0,120,10)  plot = gsn_csm_contour(wks,a,res)  ;
> Create filled contoursend*
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> Also, I want to shift the X-axis label above the legendbar.
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> Any help would be appreciated.
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> Thanks,
>
> Tabish
> Tabish U Ansari
> PhD student, Lancaster Environment Center
> Lancaster Univeristy
> Bailrigg, Lancaster,
> LA1 4YW, United Kingdom
>
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