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Dear "Fellow Rebol Rousers",
After having read the docs I have not quite figured
out how to accomplish the interleaving of strings.
The short and the long of what I want to do is take
latitude and longitude coordinate pairs and interleave them with each
other.
The rational behind this is to place objects that
are physically close to each other in the real world close together in computer
memory, which we all know is linear and not spherical like the earth.
The coordinates are in decimal degrees for the
sake of easy manipulation.
The max longitude is 180 degrees while the max
latitude is 90.
Ignore the issue of positive/negative values as indications of north/south east/west locations. The first segment of the numbers would be
interleaved on the basis of the non decimal portion of their values (1st three
positions assuming required zero padding).
The balance of the values would be interleaved on each subsequent pair. As an example:
latitude value :
043.6732452849
longitude value: 142.8321724625 interleaved value: 043142 6783 3221 4572 2846
4925
(spaces are only for readability/illustration) The non decimal portion must be padded with a zero
for all latitude values (they never exceed 90).
For longitude the non decimal portion must be padded with zero if the value is <100. I understand that I must convert the numbers to
rebol strings to access the necessary functionality required to step through the
"number" and pluck out the required portion.
My problem:
At bare minimum I need to understand the command
syntax for stepping and clipping the string at specific points as well as the
method for specifying the length of the clipped portion.
Any inspiration would be most appreciated. Thanks in advance,
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