Inverting the scale in heat.colors

6 messages · caspar hallmann, Dennis Murphy, Greg Snow +1 more

Original

1

6

Manuel Spínola

Sun, Sep 12, 2010 6:05 AM #

Dear list members,

I am plotting the result of a kriging with spplot and I would like to 
reverse the colors in the heat.colors palette for the col.regions 
argument.  In other words I want the red colors to represent higher 
values than the yellow colors to represent temperature.
Best,

Manuel

Manuel Sp?nola, Ph.D.
Instituto Internacional en Conservaci?n y Manejo de Vida Silvestre
Universidad Nacional
Apartado 1350-3000
Heredia
COSTA RICA
mspinola at una.ac.cr
mspinola10 at gmail.com
Tel?fono: (506) 2277-3598
Fax: (506) 2237-7036

caspar hallmann

Sun, Sep 12, 2010 6:25 AM #

use colorampPalette(). You can define your own colors in any order.
something as in :

plot(1:10,1,col= colorRampPalette(c("blue", "red"))(10)

hope it helps

Caspar

On Sun, Sep 12, 2010 at 3:05 PM, Manuel Sp?nola <mspinola10 at gmail.com> wrote:

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Sun, Sep 12, 2010 8:29 AM #

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Manuel Spínola

Sun, Sep 12, 2010 9:02 AM #

Thank you very much Caspar.
Best,

Manuel

On 12/09/2010 07:25 a.m., caspar hallmann wrote:

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Manuel Sp?nola, Ph.D.
Instituto Internacional en Conservaci?n y Manejo de Vida Silvestre
Universidad Nacional
Apartado 1350-3000
Heredia
COSTA RICA
mspinola at una.ac.cr
mspinola10 at gmail.com
Tel?fono: (506) 2277-3598
Fax: (506) 2237-7036

1 day later

Greg Snow

Mon, Sep 13, 2010 9:33 AM #

Others have shown how to create your own palette, which is good general information.  But for your case you may be able to simply use the rev function with heat.colors.

Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111


> -----Original Message-----
> From: r-sig-geo-bounces at stat.math.ethz.ch [mailto:r-sig-geo-
> bounces at stat.math.ethz.ch] On Behalf Of Manuel Sp?nola
> Sent: Sunday, September 12, 2010 7:05 AM
> To: r-sig-geo at stat.math.ethz.ch
> Subject: [R-sig-Geo] Inverting the scale in heat.colors
> 
>   Dear list members,
> 
> I am plotting the result of a kriging with spplot and I would like to
> reverse the colors in the heat.colors palette for the col.regions
> argument.  In other words I want the red colors to represent higher
> values than the yellow colors to represent temperature.
> Best,
> 
> Manuel
> 
> --
> Manuel Sp?nola, Ph.D.
> Instituto Internacional en Conservaci?n y Manejo de Vida Silvestre
> Universidad Nacional
> Apartado 1350-3000
> Heredia
> COSTA RICA
> mspinola at una.ac.cr
> mspinola10 at gmail.com
> Tel?fono: (506) 2277-3598
> Fax: (506) 2237-7036
> 
> _______________________________________________
> R-sig-Geo mailing list
> R-sig-Geo at stat.math.ethz.ch
> https://stat.ethz.ch/mailman/listinfo/r-sig-geo

Manuel Spínola

Tue, Sep 14, 2010 4:17 AM #

Thank you very much Greg.
Best,

Manuel

On 13/09/2010 10:33 a.m., Greg Snow wrote:

Manuel Sp?nola, Ph.D.
Instituto Internacional en Conservaci?n y Manejo de Vida Silvestre
Universidad Nacional
Apartado 1350-3000
Heredia
COSTA RICA
mspinola at una.ac.cr
mspinola10 at gmail.com
Tel?fono: (506) 2277-3598
Fax: (506) 2237-7036