title: How to open excel file from weka
body: <p>How to convert from excel to csv  to opened with weka "arff file"?
  I know that i should save file in csv"coma delimeted"
  and open iy with weka >>> but my problem when i do that 
  i see all attrubite convert to one attribute with nominal
  value >>> please give me hint</p>
  
  <p>Input data :</p>
  
  <pre><code>@relation weather
  
  @attribute outlook {sunny, overcast, rainy}
  @attribute temperature real
  @attribute humidity real
  @attribute windy {TRUE, FALSE}
  @attribute play {yes, no}
  
  @data
  sunny,85,85,FALSE,no
  sunny,80,90,TRUE,no
  overcast,83,86,FALSE,yes
  rainy,70,96,FALSE,yes
  rainy,68,80,FALSE,yes
  rainy,65,70,TRUE,no
  overcast,64,65,TRUE,yes
  sunny,72,95,FALSE,no
  sunny,69,70,FALSE,yes
  rainy,75,80,FALSE,yes
  sunny,75,70,TRUE,yes
  overcast,72,90,TRUE,yes
  overcast,81,75,FALSE,yes
  rainy,71,91,TRUE,no
  </code></pre>