>From: Gary Cunning <address@hidden>
>Organization: NCAR/RAP
>Keywords: 200011061722.eA6HMI408974 GOES imagery
Gary,
>I have recently ran into to a problem with mcidas. When I try to run the
>imgremap command I get an error message. I recall that I was able to run
>imgremap at an earlier time .For example:
>
>IMGREMAP GV4.3 MI.1 LATLON=35 93 PRO=LAMB 25 25 95
>IMGREMAP: Failed to acquire memory to store source image
This is telling you that your system doesn't have either enough disk
space or shared memory to do the operation.
>Here are my aliases:
>
>AKA
>Alias Name Group/Descriptor
>-------------------- ----------------------------------------
>GI4A GOES8/IR4KM
>GI4B GOES8/IR4KM2
>GI4C GOES8/IR4KM5
>GV4 GOES8/VIS4KM2
>MI MYDATA/IMAGES
>AKA -- done
Hmm... I am suprised that you don't have enough memory to create a Lambert
Conformal representation of a 4km VIS image. How large is the original
image? Also, the default output resolution shown by the online help
for IMGREMAP is '1':
HELP IMGREMAP
IMGREMAP -- Remaps an image into a different projection
IMGREMAP sdataset ddataset <keywords>
Parameters:
sdataset | source ADDE dataset name and position; specify as
alias.position or group/descriptor.position; to use default
position, either enter "0" or omit .position portion
(no def for alias or group/descriptor, def=0 for position)
ddataset | destination ADDE dataset name and absolute position;
specify as alias.position or group/descriptor.position;
only positive integers are valid for the position number
Keywords:
********************* Image Selection Keywords *************************
DAY= | selects the most recent sdataset image from the specified day
(def=most recent image)
TIMe=btime etime | selects the most recent sdataset image in the
specified time range (def=most recent image)
MAG=lmag emag | line and element reduction factor to apply to source
data before it's remapped; valid range is 1 through -999
where 1, 0, and -1 mean no reduction, -2 means a 2x
reduction, etc; see Remarks (lmag def=1, emag def=lmag)
*************************** Output Keywords ****************************
BANd= | image band number (def=existing band if image is single-band;
no def if image is multi-band)
ID= | NIDS station ID; valid only with Unidata NIDS ADDE server
LATlon= clat clon | center latitude and longitude for ddataset
(def=center latitude and longitude of sdataset)
STAtion= | station ID, e.g., MSN, YSSY, 72201 to place at center
of remapped image
MERge=YES | merge data in sdataset with what is in ddataset; valid
only with PRO=DEST
=NO | overwrite data in ddataset (def)
PRO=DEST | use the navigation of ddataset (def)
=LAMB slat1 slat2 slon | Lambert Conformal, standard latitude
and standard longitude (slat1 def=30,
slat2 def=50, slon def=center longitude)
=MERC slat | Mercator projection and standard latitude (slat def=0)
=MOLL slon | Mollweide projection and standard longitude (slon def=0)
=PS slat slon | Polar Stereographic projection, standard latitude
and standard longitude
(slat def=60, slon def=center longitude)
=RADAR rot | Radar projection and rotation angle (rot def=0)
=RECT | Rectilinear projection
=SIN | Sinusoidal Equal Area projection
=TANC slat slon | Tangent Cone projection, standard latitude and
standard longitude (slat def=30 if center latitude
is in northern hemisphere, -30 if center latitude
in southern hemisphere; slon def=center longitude)
RES= | resolution of ddataset in km; not valid with PRO=DEST (def=1)
SIZe=line ele | number of lines and elements in ddataset; the 'ele'
value must be a multiple of 4; SIZE is not valid with
PRO=DEST (def=480 640)
=ALL | creates an image large enough to include entire
geographical coverage of sdataset
SMOoth=limb data | provide limb or data smoothing, where:
limb - NO or YES for limb smoothing (def=NO)
data - NO or YES for data smoothing (def=NO)
SPLine= | spline size in image pixels; range is at least 1 to 100; the
range minimum may be computed base on source data (def=20)
You probably want to keep the output resolution the same as the input,
so you should add the RES=4 keyword to your invocation.
>I have tried logging out of my account and rebooting my computer. But
>neither actions help resolve the problem.
How much memory does your machine have? This is a Linux box, true?
If so, you can use
o top
or
o run 'cat /proc/meminfo' and look for the line that defines 'MemTotal:'
Please don't think that Linux necessarily sees all of the memory installed
in your workstation; it might not. If it doesn't, your system administrator
will have to take steps to tell Linux to recognize all of the memory that
you have installed.
You can find support-user discussions on this and other McIDAS issues
at:
http://www.unidata.ucar.edu/glimpsedocs/ghmcidas.html
In the case of shared memory for Linux, use shared and/or memory and/or
Linux as your search key(s). For instance, 'shared memory, Linux'.
Tom
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