Help for MSSVIEW

PURPOSE:

"mssview" makes an image that contains a scatterplot graph of two or three
	bands in an MSS format dataset.  The graph contains the scatterplot
	in a box in the middle of the image.  Around the sides of the image
	are labels with the minimum and maximum values and user defined
	labels.  The scatterplot can plot three dimensions by varying the
	intensity of the point by the value of the third dimension.
	Each dimension plotted is automatically scaled to fit.

EXECUTION EXAMPLES:

mssview  INPUT.MSS  OUTPUT.IMG  MSS=6 BANDS=(3,4) NLOUT=300 NSOUT=400  				LABELS=("RED BAND","IR BAND")

    In this example the input MSS format data set is INPUT.MSS and it is made
up of 6 bands.  The bands that will be plotted are the third and the fourth
in the dataset.  The number of lines in the output image will be 300 and the
number of samples will be 400.
    The output image is in byte format and the box and the labels have DN
value 255.  The data points are read in and the minimum and maximum are 
determined for each band.  The plot is scaled so that all of the points will
just fit in.  The characters are generated with a 7 by 5 dot matrix.  Larger 
size images will have multiple height characters.

mssview  INPUT.MSS  OUTPUT.IMG  MSS=5 BANDS=(1,2,5) 

    In this example, bands 1, 2, and 5 in INPUT.MSS will be plotted with
band 1 in the x direction, band 2 in the y direction, and band 5 plotted
as the intensity of the points.  The default output image size of 256 by
256 will used.  The intensity of the plotted points will range from a DN
value of 50 to a value of 250.


RESTRICTIONS:

The minimum output image size is 150 by 150 , and the maximum is 1000 by 1000.
The maximum number of data points that can be plotted is 50,000.
The maximum label length is 32 characters.
The maximum line length on the MSS format input dataset is 60,000 samples.
HISTORY:

Original Programmer:	Frank Evans	November 1985

Cognizant Programmer:	Frank Evans

Revisions:

   5-SEP-94,  AMS:  (CRI) Made portable for UNIX
  14-APR-87,  LWK:  added INCR, LINC, SINC, THRESH parameters


PARAMETERS:


INP

Input MSS format data

OUT

Output scattergram image

SIZE

VICAR size field

SL

Starting line

SS

Starting sample (per band)

NL

Number of lines

NS

Number of samples (per band)

MSS

Number of bands in MSS format input dataset

BANDS

Which bands to use in scatter plot ( 2 or 3 numbers)

NLOUT

Number of lines in output

NSOUT

Number of samples in output

LABELS

The labels associated with each band

INCR

LINC and SINC

LINC

Line increment

SINC

Sample increment

THRESH

DN threshold

See Examples:


Cognizant Programmer: