[gradsusr] 99% confidence level

[Lyndon Mark Olaguera]

Hello,


This website provides an example of doing a statistical significance test
using grads:

https://nelson.wisc.edu/ccr/resources/grads/significance-scripts.php

Read the instructions carefully.

As for the dots in the figure for areas which are statistically
significant. You can do the following:

[1] Mask out areas that are greater than the t statistic that you are using.
[2] Save the masked output as a point shapefile. You can also do this in
grads. Everything is in this website:
http://cola.gmu.edu/grads/gadoc/shapefiles.html
[3] Plot the basemap (the anomaly from your figure) then draw the shapefile.

Hope this helps.
Goodluck!

*Lyndon Mark P. Olaguera*
PhD Student
Monsoon Climatology Laboratory
Department of Geography
Faculty of Urban Environmental Science
Minami-Osawa Campus
Tokyo Metropolitan University


On Thu, Jan 26, 2017 at 9:18 AM, mehwish ramzan <mehwish.ramzan at gmail.com>
wrote:

> Dear Andrew and GrADS users,
>
> I want to prepare a figure showing regions statistically significant at
> the 99% confidence level (using Student’s *t*-test) by subtracting model
> from observation.
>
> Please see attached file as a sample.The statistically significant areas
> are presented as black dots in the figure.
>
>
> How can i obtain such figure using GrADS.
>
>
> Please guide me.
>
> Thank you
>
> With Best Regards,
>
> Mehwish
>
>
> PS: The figure attached as sample is just for reference purpose.
> Figure reference: http://www.nature.com/articles/srep11847/figures/1.
> Retrieved on 25/01/2017
>
>
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>
>
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