dumber -- Dumber is a tool to reduce the resolution of the shape model. To start with, you have previously built a low resolution model using low resolution maplets. Now let's bring in the new data from the high resolution maplets. We want to start fresh and not carry any existing errors or artifacts into the new model. However, we need a starting point. Thus, we will reduce the quality of the model by several orders of magnitude, then built it one resolution level at a time.

Input files

• The entered name for input of a shape file

Output files

• The entered name for output

It will ask for what factor to reduce using powers of 2.

• A reduction of one level is 2. A model of Q=512 would be converted into 256.
• A reduction of two levels is 4. A model of Q=512 would be converted into 128.
• A reduction of three levels is 8. A model of Q=512 would be converted into 64.
• A reduction of four levels is 16. A model of Q=512 would be converted into 32.

It will ask you if you want to trim albedo. This option doesn't fully work -- only the first line, so I suggest saying "n" so that the model can be used with albedo. If you want to get rid of albedo, then you can use the cut command.

• cut -c 1-47 filename > newname. Note, some versions of densify provide a different format, so 47 may not be the right value.

Example

$ dumber 
 Input infile
SHAPE.TXT
 Input outfile
TMP.TXT
 Input m (2,4,8 ...)
8
 Trim albedo? (y/n)
n