edit: scatter plot of 2D variable as f(latitude)

Dear List Members,

I have a 2D variable "rc" containing regression coefficients as:

Variable: rc
Type: double
Total Size: 1443936 bytes
            180492 values
Number of Dimensions: 2
Dimensions and sizes: [lat | 356] x [lon | 507]
Coordinates:
            lat: [22.17641175..51.9691461]
            lon: [22.17641175..23.11934862]
Number Of Attributes: 1
  _FillValue : -9999

I have tried plotting it as a function of latitude but intuitively it
somehow does not seem right. I am expecting increasing values as latitude
increases and that does seem apparent in the plot but it looks like a power
spectra. My code could be right but I have sense that I am not following the
correct syntax. Please find the code reproduced below and the plot attached
- apologies if that is not the accepted method of sharing attachments, I am
new to the list.

The plotting code:

;************************************************
; plotting parameters, scatter plot of regression coefficient VS latitude
; ************************************************
 wks = gsn_open_wks ("png","Regression.coefficient.VS.latitude")
      ; open workstation

 res = True ; plot mods desired
 res@tiMainString = "Regression coefficient VS Latitude" ;
add title
 res@xyMonoMarkLineMode= True
 res@xyMarkLineMode = "Markers" ; choose which have markers
 res@xyMonoMarker = True
 res@xyMarker = 16 ; choose type of marker
 res@xyMarkerColor = "red" ; Marker color
 res@xyMarkerSizeF = 0.002 ; Marker size (default
0.01)

 res@tmLabelAutoStride = True ; nice tick mark labels

* plot = gsn_csm_xy (wks,rc&lat,rc,res) ; create plot*

Many thanks,

-- 
advait godbole

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