Re: [ferret_users] several things

[Carlos Román Cascón <carlosromancascon@xxxxxxxxxx>]

Hi,

I think I can't use FILL/CONTOUR because it's not a 2-dimensional plot?
I get an error if i change shade for fill... I am ploting height
(y-axis) Vs xlong in a concrete point of latitude.
Is there another way to smooth the image?

I have used the LABEL comand to put the name of the place that I need
where I need (I have used label/nouser ...and inches) 

Now, I would like to plot a meteorological tower of 100 m (a little
stick in my graphic) in some concrete position.. Can I do it? I would
like to use a predefined image, but I can also use only a kind of stick.

I think I am going to need a posprocessing tool to do it.. 

Thank you very much for all

Carlos Román Cascón



On Fri, 2011-07-22 at 10:15 -0700, Ansley Manke wrote:
> Hi
> Have you looked at your plots using the FILL command instead of SHADE?
> 
> See the LABEL command which lets you put a label anywhere on the plot, 
> using either user-coordinates (longitude and height) or page 
> coordinates, which are "inches" relative to the plot surface.
> 
> There are a number of color scales available, look at "palette" in the 
> documentation.  Ferret includes many pre-defined palettes, and you can 
> create your own customized palettes.  There are several FAQ's about 
> color palettes; look in the "Custom Plots" section of the FAQ's.
> 
> There are limited things within Ferret to do about changing the 
> background color.  You can change the background color to black, "go 
> black".  There are various tricks to making a background color, and we 
> could talk about that more in another message, but your easiest solution 
> right now might be to use a post-processing image software to change 
> white to another color.
> 
> I'm not entirely sure what you want to do differently about the 
> coordinates. You are using the curvilinear form of the SHADE command.  
> Is your data on a truly curvilinear grid?  That is, does the variable 
> xlong vary in the y direction, or is it only a function of longitude?  
> If it's only a function of longitude and height is only a function of 
> height then you could define coordinate axes from those coordinate 
> variables.
> 
>     yes? define axis/x/units=degrees_east xaxis = xlong[j=1]
>     yes? define axis/y/units="`height,return=units`" yaxis = height[i=1]
>     yes? let/units="your definition of the units" cloudvar = 
> 1000*qcloud[x=xaxis@asn,y=yaxis@asn]
> 
> 
> 
> On 7/22/2011 2:51 AM, Carlos Román Cascón wrote:
> > Hi,
> >
> > I would like to "smooth" the attached image (the qcloud output), in
> > order not to see the "lines" separating points of the grid in vertical
> > levels and horizontal resolution. I don't know if it's possible with
> > Ferret.
> >
> > I would also like to put a name of a place ("Investigation centre") in a
> > concrete point of the surface in the graphic and change the colour of
> > the surface (the white part). I would also like to specify the colour of
> > the colorbar, for example, I want the surface (now white) in brown and
> > the 0-0.5 part (pink part) in clear blue or white...
> >
> > I don't know how to handle the axis in coordenates instead of grid
> > points in Ferret. I think I have to use a post-processing tool of WRF to
> > do it, but I don't know which one I should use.
> >
> > This is the code I use.
> >
> > use 15julio.nc
> > set region /i=0:120/j=60
> > let height=(PH+PHB)/9.81
> > REPEAT/l=1:40 (shade /vlim=670:1400/lev="(0,1,0.05)" qcloud*1000, xlong,
> > height; plot /nolab /over /line /vs xlong,hgt/1000;
> > frame/file=dibujo`l`.gif)
> >
> >
> >
> > There are a lot of question, but you always solve my doubts. Thank you
> > very much in advance
> >
> > Carlos Román Cascón