[ncl-talk] Placing numbers above the bars

[Barry Lynn]

Hi Mary (and Rick):

Thank you for the help.

I used "BottomCenter" and added 100 above the height of the bar being used
for labeling (num_o(n)+100).

On Tue, Feb 19, 2019 at 10:29 PM Mary Haley <haley at ucar.edu> wrote:

> Barry,
>
> You can add space by increasing the Y position of the text string in the
> call to gsn_text (or gsn_add_text).  For example, if the max value is 4000,
> don't put the label right at 4000, but rather add a little to it, like
> 4005. You can also cheat by adding a carriage return at the end of the
> string, e.g., instead of "label", use "label~C~" which adds one carriage
> return.  For two, "label~C~~C~" and so on.
>
> The other thing to do do is set txJust to BottomCenter, which means the
> bottom center of the string is what will be positioned at your X,Y
> position, and not the center center of the string.  And growing the labels
> is via the txFontHeightF resource.
>
> --Mary
>
>
>
>
> On Tue, Feb 19, 2019 at 11:09 AM Barry Lynn <barry.h.lynn at gmail.com>
> wrote:
>
>> Hello:
>>
>> I was a bit surprised do see that there are numbers above the bars now.
>>
>> However, they are there, so I must have really benefited from the
>> information on these two pages.
>>
>> http://www.ncl.ucar.edu/Applications/Scripts/bar_horz_7.ncl
>>
>> https://www.ncl.ucar.edu/Document/Graphics/Interfaces/gsn_text.shtml
>>
>> Yet, I am wondering how I might create a bit of space between the bars
>> and the labels, and how I might grow the labels (numbers) themselves?
>>
>> Thank you,
>>
>> Barry
>>
>> On Tue, Feb 19, 2019 at 5:33 PM Mary Haley <haley at ucar.edu> wrote:
>>
>>>
>>> Barry,
>>>
>>> You can also use gsn_add_text or gsn_text to place the text above the
>>> bar, using the max value of the bar and the X axis position.
>>>
>>> There are some examples. See bar_7.ncl at:
>>>
>>> http://www.ncl.ucar.edu/Applications/bar.shtml#ex7
>>>
>>> Histograms are slightly different, but there are also several examples
>>> of labeling the bars:
>>>
>>> http://www.ncl.ucar.edu/Applications/histo.shtml
>>>
>>> See #12, and #16. This is mainly to give you some ideas of different
>>> ways to label a bar.
>>>
>>> --Mary
>>>
>>>
>>>
>>>
>>> On Sun, Feb 17, 2019 at 9:17 AM Rick Brownrigg <brownrig at ucar.edu>
>>> wrote:
>>>
>>>> Hi Barry,
>>>>
>>>> You might be able to use "datatondc()" to get the NDC coordinates of
>>>> the tops of the bars, and then use gsn_text_ndc() to draw your annotation
>>>> (applying a small offset in x and/or y direction to properly position it).
>>>> The example on the datatondc() does something similar, but with markers
>>>> rather than text.
>>>>
>>>>     http://ncl.ucar.edu/Document/Functions/Built-in/datatondc.shtml
>>>>     http://ncl.ucar.edu/Document/Graphics/Interfaces/gsn_text_ndc.shtml
>>>>
>>>> Hope that helps...
>>>> Rick
>>>> On Sat, Feb 16, 2019 at 11:05 PM Barry Lynn <barry.h.lynn at gmail.com>
>>>> wrote:
>>>>
>>>>> Hello:
>>>>>
>>>>> I have a bar chart attached.
>>>>>
>>>>> I would like to place a number (I will generate it) above the position
>>>>> of the bar highest bar, centered at each labeled (x-axis) interval.
>>>>>
>>>>> Is there a straightforward way to do this?
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Barry
>>>>>
>>>>> --
>>>>> Barry H. Lynn, Ph.D
>>>>> Senior Associate Scientist, Lecturer,
>>>>> The Institute of the Earth Science,
>>>>> The Hebrew University of Jerusalem,
>>>>> Givat Ram, Jerusalem 91904, Israel
>>>>> Tel: 972 547 231 170
>>>>> Fax: (972)-25662581
>>>>>
>>>>> C.E.O, Weather It Is, LTD
>>>>> Weather and Climate Focus
>>>>> http://weather-it-is.com
>>>>> Jerusalem, Israel
>>>>> Local: 02 930 9525
>>>>> Cell: 054 7 231 170
>>>>> Int-IS: x972 2 930 9525
>>>>>
>>>>> _______________________________________________
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>>>
>>
>> --
>> Barry H. Lynn, Ph.D
>> Senior Associate Scientist, Lecturer,
>> The Institute of the Earth Science,
>> The Hebrew University of Jerusalem,
>> Givat Ram, Jerusalem 91904, Israel
>> Tel: 972 547 231 170
>> Fax: (972)-25662581
>>
>> C.E.O, Weather It Is, LTD
>> Weather and Climate Focus
>> http://weather-it-is.com
>> Jerusalem, Israel
>> Local: 02 930 9525
>> Cell: 054 7 231 170
>> Int-IS: x972 2 930 9525
>>
>>

-- 
Barry H. Lynn, Ph.D
Senior Associate Scientist, Lecturer,
The Institute of the Earth Science,
The Hebrew University of Jerusalem,
Givat Ram, Jerusalem 91904, Israel
Tel: 972 547 231 170
Fax: (972)-25662581

C.E.O, Weather It Is, LTD
Weather and Climate Focus
http://weather-it-is.com
Jerusalem, Israel
Local: 02 930 9525
Cell: 054 7 231 170
Int-IS: x972 2 930 9525
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