IMGCHA
Changes an image directory.
Format
IMGCHA dataset [keywords]
Parameter
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dataset
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ADDE dataset name and position; specify one of the following formats:
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group/descriptor.position
alias.position
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|
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only positive integers are valid for position
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Keywords
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BANd=
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changes the image band number; the range is 1 to 64
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NA
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changes the band sequence to unavailable; reserved for GOES visible images prior to GOES-8
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CTYpe=
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changes the calibration type
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DAY=
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changes the Julian day (YYDDD) of the image
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ELE=
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changes the beginning image element number
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ID=
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changes the NEXRAD station ID to the specified value, e.g., MKX
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LINe=
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changes the beginning image line number
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MEMo=
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'text'
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changes the text in the memo field; 32 characters maximum
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OTYpe=
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changes the original source type
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RES=
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line ele
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changes the line and element resolution
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SS=
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changes the sensor source number
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STYpe=
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changes the source type
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TIMe=
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changes the time (HH:MM:SS) of the image
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VALcode=
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changes the validity code
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Remarks
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CAUTION:
Do NOT change any directory values unless you are familiar with the structure of the image data and its source.
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Use command IMGLIST with FORM=ALL to list the image directory values that can be changed with the IMGCHA command. An example is shown below.
Pos Satellite/ Date Time Center Res (km) Image_Size
Sensor Lat Lon Lat Lon
--- -------- ------------ ------- --- --- --- --- ----------
11 G-10 IMG 16 APR 02106 19:00:00 34 118
Band: 4 10.7um Surface temp; longwave window 5.54 2.55 480 X 640
proj: 0 created 2002106 194538 memo: RT GVAR
type:GVAR cal type:RAW
offsets: data=3328 navigation= 256 calibration= 2816 auxiliary= 0
doc length: 0 cal length: 0 lev length: 0 PREFIX= 0
valcod: 0 zcor: 0 avg-smp: N
start yyddd: 2002106 start time:190013 start scan: 316
lcor: 3601 ecor: 16617 bytes per pixel: 2 ss: 74
Resolution Factors (base=1): Line= 4.0 Element= 4.0
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The table below shows which IMGCHA keywords correspond to the output fields.
| IMGCHA keyword |
IMGLIST output field |
|
BAND |
Band |
|
CTYPE |
cal type |
|
DAY |
Date |
|
ELE |
ecor |
|
LINE |
lcor |
|
MEMO |
memo |
|
RES |
Resolution Factors |
|
SS |
ss |
|
STYPE |
type |
|
TIME |
Time |
|
VALCODE |
valcod |
Examples
IMGCHA RT/GOES-IR.1 TIME=16:14:59
This entry changes the directory of the image in position 1 of datasetRT/GOES-IR.1. The image time is changed to 16:14:59.
IMGCHA N14.99 LINE=2075 MEMO='Band 2 NOAA-14 HRPT over Florida'
This entry changes the directory of the image in position 99 of the dataset with the alias name N14. The beginning image line number is changed to 2075 and the memo field is changed to "Band 2 NOAA-14 HRPT over Florida."