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There exist a number of ways to get pixels into GREG2\.
- Read the X, Y, Z values of a Z=f(X,Y) "image", use RGDATA (if X and Y
define a regularly sampled grid) or RANDOM (if X and Y are "random
points") to make a Regular Grid Map (see HELP GREG1\COLUMN, GREG2\RGDATA
- Read a RGDATA-format file with the RGDATA command (see topic RGDATA)
- Define a 2-D SIC variable and fill it with values, or connect a SIC
variable with an existing GILDAS DATA FORMAT (GDF) image (see
HELP SIC\DEFINE), or use the SIC\ACCEPT command to read formatted/unfor-
matted streams of values and put them in a SIC 2-D variable (see
HELP SIC\ACCEPT). Then give this 2-D variable to the internal image
buffer by the RGDATA Varname /VARIABLE command.
- The command GREG3\IMAGE connects directly an existing 2, 3 or 4-D GILDAS
DATA FORMAT image in the GREG image buffer. See HELP GREG3\IMAGE for de-
- Use the VECTOR\RUN FITS_GILDAS command to convert a FITS image to a GDF
(Gildas Data Format) image that will be directly readable afterwards.
- "on-the-fly" automatic conversion from FITS to GDF format for SIC\DE-
FINE IMAGE and GREG3\IMAGE commands.