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Re: [ferret_users] Putting text on a figure that a value from a calculation in the script

Great. This is what I needed. I appreciate the help

On Thu, Jan 7, 2016 at 1:34 PM, Ansley C. Manke <ansley.b.manke@xxxxxxxx> wrote:
Try this simple example, where the _expression_ is just a variable evaluated at a location. It could be any _expression_ that evaluates to a scalar.
yes? use etopo20
yes? shade/pal=land_sea/lev=c rose
yes? use ocean_atlas_subset

! some _expression_ that will go into the label.
yes? let temp_at_loc = temp[x=190,y=20,k=1,l=1]

yes? label/user 190,20,0,0,0.2,"`temp_at_loc,precision=3`"

The precision=3 is an example of using "grave-accent" embedded expressions, to control the formatting of the number.

You can combine the number with text,
yes? label/user 190,20,0,0,0.2,"`temp_at_loc,precision=3` (Deg C)"

On 1/7/2016 11:25 AM, Paulo B. Oliveira wrote:
Hi Paul,

I think that you will find the solution using an embedded _expression_, cf.


On Thu, 2016-01-07 at 11:41 -0700, Paul Goddard wrote:

Is it possible to add a label/text to a figure that is the value of a calculation made in the script prior to plotting. For example, I would like to put the value of heat content on my figure where heat content is calculated previously in the same plotting script. I hope to eliminate the need to change the label text in the plotting script each time I tweak the calculation.

I know that one can define a symbol and have the label place a string when called upon, ie

def sym val = 0

label "($val)"

and 0 will be placed on the figure

​But this will not work if the defined symbol is an equation and wanting to have the answer placed on the figure.

... I hope this is clear.

Thanks in advance,


Paul Goddard

PhD Candidate

Department of Geosciences

University of Arizona

Paul Goddard
PhD Candidate
Department of Geosciences
University of Arizona

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