# [ncl-talk] Determining Font Heights in NCL

Mary Haley haley at ucar.edu
Fri Aug 4 10:07:16 MDT 2017

```One thing to be aware of is that text will get resized if if you set
res at gsnMaximize = True for a plot, or if you draw a plot in a panel.

This is because NCL tries to maintain the text size relative to the plot
size increasing or decreasing.

If you need text to be fixed at a certain size, then make sure you are not
setting res at gsnMaximize to True.

If you need to control the font sizes of plots in a panel, then this is
going to involve a little trickery which I can maybe help with.

--Mary

On Thu, Aug 3, 2017 at 11:08 AM, Rick Brownrigg <brownrig at ucar.edu> wrote:

> Hi,
>
> As you may know, there are 72 points per inch, so an 8pt font would be
> 8/72 = .1111 inches.  However, font size in NCL is measured in NDC space,
> which is a unit square area mapped to the longest dimension of your plot.
> So you'd need to know the size in inches of your plot to find the right
> factor. If for example you are plotting to PDF output on an 8"x11" page,
> then an inch in NDC space is 1/11 = .0909 ndc/in.  So I get a font size of
> .1111 x .0909 about .01 ndc
>
> That's rather small text!
>
> (I hope there are no embarrassing math errors in there!)
>
> Hope that helps...
> Rick
>
> On Thu, Aug 3, 2017 at 8:23 AM, Matichuk, Rebecca <
> Matichuk.Rebecca at epa.gov> wrote:
>
>> Hi,
>>
>>
>>
>> I’m generating figures for an academic journal and one of the
>> requirements is for the font size to be 8 points. What is the equivalent to
>> 8 points in NCL?
>>
>>
>>
>> Thank you,
>>
>> Rebecca
>>
>> 303-312-6867 <(303)%20312-6867>
>>
>>
>>
>>
>>
>>
>>
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