Describe Basic_tiling here.

Basic tiling is how we increase resolution. This procedure is based on using bigmap. You can also tile using Lat/Lon LatLon_tiling.

The setup for tiling requires creating an updated bigmap file and the make_scriptT.in file.

Making the bigmap

The first step to to make a bigmap. This provides the basic (and hopefully improved) topography that the new landmarks will be tiled to. We also use it for the coordinate frame of reference which lithos will use when building landmarks.

In general, we create an input file that is fed into bigmap that has the parameters that we want. An example of this is a file called bigEq4.in that I store in the support directory (it can be whatever name you want).

l
    0.000  180.00
   0.0003000       500   1.23400        1000
EQUAT4
1
.005
.025
1
0
0
1
1
1
1
1
1
0
0

You use this set of input values as standard input (stdin) for bigmap as such:

/usr/local/bin/bigmap < support/bigEq4.in

bigmap will run and create a bigmap with the standard MAPLET format. It will be created in MAPFILES and called EQUAT4.MAP (or whatever 6 character name you gave on line 4 of your input file). bigmap will also display the name of the bigmap created. Additionally, it will add the filename into the file BIGLIST.TXT.

Creating the make_scriptT.in file

To create the make_scriptT.in file, you must do several things. In summary, you will be

• 1 Running map_coverage to figure out where there are already existing maplets. It creates coverage_m.pgm. 2 Running make_tilefiles to get a list of X/Y coordinates for the new maplets. It reads coverage_m.pgm. 3 Send the output of make_tilefiles to a temporary file and delete the user prompt 4 Create a new make_scriptT.in file that has

  • Coordinate reference system or bigmap name
  • Name of the seed file
  • list of coordinates
  • Keyword "END"

1 -- Running map_coverage

map_coverage will look at the boundaries of the specified bigmap and figure out where all the landmarks are in it. It makes a display image, coverage_m.pgm, that shows the footprint of each maplet with increasing intensity for overlaps.

Bob's procedure for tiling: TILE_MAP.TXT

..........................................
TILING OF REFERENCE MAP
..........................................

# Make bigmap REFMAP with scale = 1.25*ms (ms=maplet scale):

/usr/local/bin/BIGMAP
.. INPUTS ..
REFMAP
1
.005
.025
1
1
1
1
1
0
0
/usr/local/bin/SHOWMAP
REFMAP
gc REFMAP.pgm

/usr/local/bin/map_coverage
REFMAP
ms,ms
/usr/local/bin/make_tilefile

# For make_scriptT.in use:

& cp MAPFILES/REFMAP.MAP MAPFILES/XXXXXX.MAP
XXXXXX
XXSEED.SEED
[output of make_tilefile]

cp USED_MAPS.TXT LMRKLISTO.TXT

./rem_script.b
rm -f ./TESTFILES/*
rm -f ./TESTFILES1/*
/usr/local/bin//make_scriptT
chmod +x run_script.b
nohup ./run_script.b &

# Monitor with:

/usr/local/bin/find_nofitT

# remove LMRKLISTO.TXT when done:

rm -f LMRKLISTO.TXT

• map_coverage ms, ms in the instructions above are in km. So for 75 cm input is 0, 0.00075.