DEM按高度分带用不同颜色表示，但在erdas中怎么用？

PAGESIZE 7.80208, 9.21429 INCHES;
CELLSIZE MINIMUM;
PRINTERPAGESIZE 8.5, 11;
MARGINS 0.5, 0.5, 0.5, 0.5;
ORIENTATION PORTRAIT;
PRINTSCALE 100;
WINDOW UNION;
PROJECTION DEFAULT;
AOI NONE;
OPTIMIZE NO;
RASTER {
ID 1;
TITLE "n1_PROMPT_USER";
POSITION 1.42857, 0.703297;
PROMPT;
INTERPOLATION NEAREST;
ATHEMATIC;
DATATYPE UNSIGNED16;
DECLARE "Integer";
COMPRESSION UNCOMPRESSED;
COORDINATES MAP;
AOI NONE;
RECODE NO;
CHILD 4, 10;
}
RASTER {
ID 3;
TITLE "n3_memory";
POSITION 2.47516, 4.07692;
TEMPFILE;
NEWFILE;
INTERPOLATION NEAREST;
ATHEMATIC;
DATATYPE DOUBLE;
DECLARE "Float";
COMPRESSION UNCOMPRESSED;
COORDINATES MAP;
RECODE NO;
CHILD 8;
}
CRITERIA {
ID 4;
TITLE "All Criteria";
POSITION 2.45055, 2.18681;
SIZE 1, 24;
COLUMNTITLES "$n1_PROMPT_USER";
VALUE   "==-9999",
"<0",
"==0.0",
"<=75",
"<=150",
"<=300",
"<=450",
"<=600",
"<=750",
"<=900",
"<=1050",
"<=1200",
"<=1350",
"<=1500",
"<=1650",
"<=1800",
"<=1950",
"<=2100",
"<=2250",
"<=2400",
"<=2550",
"<=2700",
"<=2850",
"<=3000";
OUTPUTVALUES 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23;
DEFAULT 24;
CHILD 3;
}
TABLE {
ID 5;
TITLE "n5_Custom_Float";
POSITION 3.74909, 0.878266;
SIZE 25;
DATATYPE DOUBLE;
VALUE 0, 0.153, 0.027451, 0.443137, 0.458824, 0.580392, 0.694118, 0.792157, 0.870588, 0.945098, 0.929412, 0.945098, 0.913725, 0.854902, 0.756863, 0.839216, 0.886275, 0.870588, 0.929412, 1, 0.976471, 1, 1, 1, 1;
CHILD 8;
}
TABLE {
ID 6;
TITLE "n6_Custom_Float";
POSITION 5.28536, 0.869326;
SIZE 25;
DATATYPE DOUBLE;
VALUE 0.045, 0.447, 0.501961, 0.6, 0.666667, 0.741176, 0.839216, 0.886275, 0.929412, 0.929412, 0.870588, 0.807843, 0.709804, 0.615686, 0.54902, 0.615686, 0.682353, 0.72549, 0.772549, 0.807843, 0.854902, 0.870588, 0.901961, 0.945098, 0.996078;
CHILD 8;
}
TABLE {
ID 7;
TITLE "n7_Custom_Float";
POSITION 6.80208, 0.846871;
SIZE 25;
DATATYPE DOUBLE;
VALUE 0.7, 0.39, 0.945098, 0.345098, 0.396078, 0.443137, 0.458824, 0.580392, 0.631373, 0.631373, 0.6, 0.517647, 0.501961, 0.47451, 0.490196, 0.564706, 0.647059, 0.709804, 0.823529, 0.886275, 0.913725, 0.901961, 0.945098, 1, 0.996078;
CHILD 8;
}
FUNCTION {
ID 8;
TITLE "STACKLAYERS ";
POSITION 5.20879, 4.06593;
VALUE "STACKLAYERS ( LOOKUP ( $n3_memory , $n5_Custom_Float )  , LOOKUP ( $n3_memory , $n6_Custom_Float )  , LOOKUP ( $n3_memory , $n7_Custom_Float )   ) ";
AREA UNION;
CHILD 9;
}
RASTER {
ID 9;
TITLE "n9_memory";
POSITION 5.26374, 6.03297;
TEMPFILE;
NEWFILE;
INTERPOLATION NEAREST;
ATHEMATIC;
DATATYPE DOUBLE;
DECLARE "Float";
COMPRESSION UNCOMPRESSED;
COORDINATES MAP;
RECODE NO;
CHILD 10;
}
FUNCTION {
ID 10;
TITLE "255*$n9_memory * RELIEF ";
POSITION 1.42857, 5.97802;
VALUE "255*$n9_memory * RELIEF ( $n1_PROMPT_USER , 345 , 45 , 0.0 , 93 , 93 ) ";
AREA UNION;
CHILD 11;
}
RASTER {
ID 11;
TITLE "n11_PROMPT_USER";
POSITION 1.43956, 7.71429;
PROMPT;
DELETEFILE;
INTERPOLATION NEAREST;
ATHEMATIC;
DATATYPE UNSIGNED8;
DECLARE "Integer";
COMPRESSION UNCOMPRESSED;
COORDINATES MAP;
RECODE NO;
}

用编辑功能自己加颜色!就麻烦你了。<img src="http://www.gisempire.com/bbs/Skins/Default/emot/em07.gif">