geo-utils | chickadee

degree-minute-second-text #!optional DMS-TEXTprocedure: DMS-TEXT is a 3 element list of string of the form (<degrees suffix> <minutes suffix> <seconds suffix>).

degree->dms

degree->dms DEGprocedure: Returns the degree+minutes+seconds for the degrees DEG.

dms->string

(dms->string D M S [LAT? [LEADING-DIR? [PAD ""]]]) -> stringprocedure: Example: 122°45'10"W

dms->string*

(dms->string* D M S [PAD ""]) -> stringprocedure: Example: 122°45'10"

string->degree

string-dms->degree STR #!optional LAT?procedure
string->degree STR #!optional LAT?procedure: Returns the degrees for string form of dms STR.

degree->string

(degree->string DEG [LAT? [LEADING-DIR? [PAD ""]]]) -> stringprocedure: Returns the dms-string for the degrees DEG.

Module globe

Usage

(import geo-globe)

make-globe

make-globe RADIUS FLATTENINGprocedure

check-globe

check-globe LOC OBJ #!optional VARNAMprocedure

error-globe

error-globe LOC OBJ #!optional VARNAMprocedure

globe-radius-kilometers

globe-radius-kilometers GLOBEprocedure

globe-flattening-factor

globe-flattening-factor GLOBEprocedure

spherical-surface-distance

spherical-surface-distance GLOBE GP1 GP2procedure

great-circle-distance

great-circle-distance GLOBE GP1 GP2procedure

great-circle-distance-radians

great-circle-distance-radians GLOBE GP1 GP2procedure

approximate-ellipsoid-distance

approximate-ellipsoid-distance GLOBE GP1 GP2procedure

great-circle-azimuth

(great-circle-azimuth GP1 GP2 [PRECISION 5]) -> numberprocedure

great-circle-position

great-circle-position GLOBE GP DISTANCE AZIMUTHprocedure

Module earth

Usage

(import geo-earth)

earth-flattening

<variable>*earth-flattening* -> real</variable>

earth-radius-miles

<variable>*earth-radius-miles* -> real</variable>

earth-radius-kilometers

<variable>*earth-radius-kilometers* -> real</variable>

Notes

The relational predicates are rather useless.
Incomplete.
Should have functor versions of algorithms so can specialize.

Repository

This egg is hosted on the CHICKEN Subversion repository:

https://anonymous@code.call-cc.org/svn/chicken-eggs/release/5/geo-utils

If you want to check out the source code repository of this egg and you are not familiar with Subversion, see this page.

Version history

1.1.0: .
1.0.7: Degree seconds are float.
1.0.6: .
1.0.5: .
1.0.4: Allow (or integer ratnum float) as real; was float only.
1.0.3: .
1.0.2: .
1.0.1: .
1.0.0: CHICKEN 5 release.
0.5.0: Add earth.
0.4.0: SI default. Add globe.
0.3.2: Uses numbers.
0.3.1: Uses test.
0.3.0: .
0.2.0: .
0.1.1: .
0.1.0: Hello

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