b'\n \n \n
 
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sffagrad (4.0)		index
user/yliu/Mfagrad.c
\n Calculating frequency attenuation gradient. \n

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\n Synopsis
       sffagrad < in.rsf > out.rsf grad=y lperc=65. hperc=85. freq= type=
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\n Parameters
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float freq= 		\tFrequency corresponding to energy ratio, valid when type=ratio
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bool grad=y [y/n]		\tIf y, output attenuation gradient; if n, output absorption factor
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float hperc=85. 		\tHigh percentage of total energy
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float lperc=65. 		\tLow percentage of total energy
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string type= 		\t[low,full,ratio,attenuation] attribute type, the default is attenuation
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