Heat Map for species - code from Numerical Ecology with R

Thank you Sarah for pointing out to me to turn HTML off.  Here is the message again.  To answer your questions the data I provide below is MY data.

  I am relatively new to R and I am working through the code that is provided in the book Numerical Ecology with R:  http://xa.yimg.com/kq/groups/19243105/1919134110/name/Numerical.pdf (pg 79)

 and I have run across an error message that I can't seem to figure out.

  I am using the vegan, ade4, gclus and cluster packages.  The code is as follows:

# Ordered community table
# Species are ordered by their weighted averages on site scores

or <- vegemite(spe, spe.chwo)

spe is the dataframe, here is part of it:

    AGA   ANT   BON  CAL1   CAL   CER   CRY   DES  EUTH FRY
1  0.420 0.092 0.051 0.000 0.975 0.000 0.111 0.000 0.127   0
2  0.000 0.000 0.007 0.002 0.915 0.000 0.000 0.000 0.151   0
4  0.000 0.008 0.000 0.009 0.124 0.003 0.000 0.000 0.095   0
7  0.000 0.002 0.003 0.002 0.121 0.002 0.000 3.573 0.180   0
12 0.000 0.020 0.000 0.002 0.444 0.001 0.000 0.000 0.242   0
13 8.727 0.000 0.000 0.000 0.743 0.000 0.000 0.000 0.050   0
14 2.163 0.009 0.000 0.003 1.121 0.000 0.000 0.000 0.051   0
15 0.000 0.004 0.000 0.000 0.109 0.000 0.000 0.000 0.007   0
18 9.021 0.018 0.002 0.000 0.286 0.000 0.000 0.000 0.028   0
19 0.000 0.038 0.000 0.019 0.509 0.000 0.000 0.000 0.155   0

spe.chwo came from:

  spe.norm <- decostand(spe, "normalize")
  spe.ch <- vegdist(spe.norm, "euc")
  spe.ch.UPGMA <- hclust(spe.ch, method = "average")
  spe.chwo <- reorder.hclust(spe.ch.UPGMA, spe.ch)


and the error is

Error in vegemite(spe, spe.chwo) :
  Cowardly refusing to use longer than 1 char symbols:
Use scale

 The data in the dataframe is biomass data recorded to 4 digits.  I'm wondering if this code is not working because my data is more than one digit long.

Any suggestions or insight on how to get this code to work would be greatly appreciated.

Thank you,

Val

Date: Tue, 23 Jul 2013 15:47:16 -0400
Subject: Re: [R] Heat Map for species - code from Numerical Ecology with R
From: sarah.goslee at gmail.com
To: soccermucc at hotmail.com
CC: r-help at r-project.org

Hi Valerie,

Are you using your own data or data provided by the authors?

If the latter, where can we get it?

If the former, please provide a reproducible example using dput() to
include some of your data.

Also, please resend your message with HTML mail turned off so we can
actually read it.

Providing a reproducible example makes it possible for us to figure
out what went wrong.

Sarah

On Tue, Jul 23, 2013 at 2:49 PM, Valerie Mucciarelli
<soccermucc at hotmail.com> wrote:

Hello, I am relatively new to R and I am working through the code that is provided in the book Numerical Ecology with R and I have run across an error message that I can't seem to figure out. I am using the vegan, ade4, gclus and cluster packages. The code is as follows: # Ordered community table # Species are ordered by their weighted averages on site scores or <- vegemite(spe, spe.chwo) spe is the dataframe spe.chwo came from: spe.norm <- decostand(spe, "normalize") spe.ch <- vegdist(spe.norm, "euc") spe.ch.UPGMA <- hclust(spe.ch, method = "average") spe.chwo <- reorder.hclust(spe.ch.UPGMA, spe.ch) and the error is Error in vegemite(spe, spe.chwo) : Cowardly refusing to use longer than 1 char symbols: Use scale The data in the dataframe is biomass data recorded to 4 digits. Here is an example of part of the dataframe:
AGA ANT BON CAL11 0.42 0.092 0.051 0.0002 0.00 0.000 0.007 0.0024 0.00 0.008 0.000 0.0097 0.00 0.002 0.003 0.002

I'm wondering if this code is not working because my data is more than one digit long. Any suggestions or insight on how to get this code to work with biomass data would be greatly appreciated. Thank you, Val
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