Re: Problem with sf reso​urces​

Hi Nicole,
The reason you are not getting a plot and yet have no errors is that you have both gsnDraw and gsnFrame set to False. These resources are intended for situations where you have to add
something such as annotations to the plot object after it is created in memory and then you subsequently call the draw and frame procedures yourself. Since you did not do that, the plot objects are only in memory and nothing is drawn when you exit. I have attached a slightly revised version of your script that does produce a plot.
 -dave

On Feb 21, 2013, at 3:53 AM, Nicole Stoffels wrote:

> Thank you Dave!
>
> I have tried out your advice. Unfortunately the problem still is, that I don't get any plot at all. And I still have no idea why, because I don't even get error messages while running ncl.
>
> I have attached my program and the input data, as already mentioned the pca data is binary. It would help if I at least had an error message.
>
> I would really be happy to get some more help!
> Thanks a lot!
>
> Nicole
>
>
> > David Brown <dbrown@ucar.edu> hat am 20. Februar 2013 um 22:23 geschrieben:
> >
> >
> > The code you have listed does not set any map limits. If your data occurs over a small region but you are drawing a global map, your data region may just be too small to see.
> > You do not need to worry about sfElementNodes or stFirstNodeIndex.
> > You could first try using gsn_csm_contour (without the map) to see if you get any sort of a plot.
> >
> > To set the map limits use:
> >
> > res@mpLimitMode = "latlon"
> > res@mpMinLatF = latS
> > res@mpMinLonF = lonL
> > res@mpMaxLatF = latN
> > res@mpMaxLonF = lonR
> >
> > You may also need to set gsnAddCyclic = False
> >
> > -dave
> >
> > On Feb 20, 2013, at 2:09 PM, Nicole Stoffels wrote:
> >
> > > Dear NCL-Experts,
> > >
> > > I have three scalar datasets, latitude, longitude (ascii) and the actual data (binary). They all have the same length ((0) len data: 1075 len lon: 1075 len lat: 1075) and are ordered correctly, meaning that the values at the first index are the latitude value and its corresponding data value and data value.
> > >
> > > I now want to draw a contour plot. I found the scalar field resources which perfectly fit to my problem. Unfortunately I could not draw a plot yet. I do not even get any error messages.
> > >
> > > Here are the important parts of my code:
> > >
> > > latS = min(lat)
> > > latN = max(lat)
> > > lonL = min(lon)
> > > lonR = max(lon)
> > >
> > > res@sfDataArray = data1
> > > res@sfXArray = lon
> > > res@sfYArray = lat
> > >
> > > plot = gsn_csm_contour_map(wks, data1, res)
> > >
> > > I guess I did not really get the connection between the three datasets. In the examples on the homepage sfElementNodes and sfFirstNodeIndex are used as well and seem to be of major importance. But I did not really get the usage of those two.
> > >
> > > Does anybody have any idea where the bug in my code is or what is missing?
> > >
> > > Thanks a lot!
> > > Best wishes
> > > Nicole Stoffels
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