title: correlation heat map
body: <p>I want to make a heat map of correlated data and instead of getting the correlation scale from 0.85, I want it from 0.90. I need to know how can I tweak this scale.</p>
  
  <p><img src="https://i.stack.imgur.com/jP1MF.png" alt="enter image description here"></p>
  
  <p>The commands I am using are:</p>
  
  <pre><code>data&lt;-read.table("data_corr", header=T) 
  tiff('corrheatmap.tiff')
  library(gplots)
  z&lt;-cor(data)
  lowColor = "purple" #change this if you want
  highColor = "blue" #change this if you want
  colorMin = 0 # I have made this 0.9 and also 90 in any case I don't see the difference
  heatmap.2(z, Rowv=FALSE, Colv=FALSE, dendrogram="none", key=TRUE, density.info="none", trace="none", col=colorpanel(100, lowColor, highColor), scale="none", cexRow=0.15, cexCol=0.15) 
  </code></pre>