Ascii format rendering

[salah jubeh]

Hi guys
   
  I have an ascii image the have , i have created this image by calculating the NDVI so the picxel values are from 0-1 also there are oixel has values -9999 which represent the No nodata_value .
   
  when i render thes image using mapserver it gives me just black images, i have checked this image with othe softwares it is correctly created . 
   
  how can i fix this problem.
   

		
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