# Topographic and Geologic Mapping

## Documentation for package ‘GEOmap’ version 2.5-11

- DESCRIPTION file
- User guides, package vignettes and other documentation
- Code demos. Use demo() to run them.

## Help Pages

A B C D E F G H I J K L M N O P R S T U V X Z

GEOmap-package | Topographic and Geologic Mapping

## -- A --

addLLXY | Add Lat-Lon points using projection
addTIX | Add Tic marks to map
along.great | Along A great Arc
antipolygon | Fill the complement of a polygon

## -- B --

BASICTOPOMAP | Basic Topogrpahy Map
bcars | Plot Box Cars
boundGEOmap | Set Bounds for GEOmap

## -- C --

CCcheck | Counter Clockwise check
ccw | Counter Clockwise Whorl
coastmap | Global Coast Map

## -- D --

darc | Circular Arc
DATUMinfo | Datum information.
demcmap | Color Map from DEM
difflon | Difference between Longitudes
distaz | Distance and Azimuth from two points
dms | Convert decimal degrees to degree, minutes, seconds
DUMPLOC | DUMP vectors to screen in list format

## -- E --

EHB.LLZ | Earthquake Location Data
Ellipsoidal.Distance | Ellipsoidal Distance
eqswath | Extract a set of eathquakes in swath along a cross sectional line
equid.cyl.ll | Map projection
equid.cyl.xy | Map projection
ExcludeGEOmap | Exclude GEOmap Strokes
expandbound | Expand Bounds
explode | Explode Points
ExplodeSymbols | Explode symbols that overlap

## -- F --

fastExtract | Extract from GEOmap
faultdip | Show Fault dip
faultperp | Fault Perpendiculars
fixCoastwrap | Correct the Wrapping problem

## -- G --

gclc | Global to local coordinates
GCLCFR | Global to local coordinates
geoarea | Area of Map objects
geoLEGEND | Geological legend from GEOmap Structure
GEOmap | Topographic and Geologic Mapping
GEOmap.breakline | Break a line at specified indeces into a list
GEOmap.breakpoly | Break up a polygon
GEOmap.cat | Concatenate Two GEOmaps
GEOmap.CombineStrokes | Combine strokes in a GEOmap list
GEOmap.Extract | Extract from GEOmap
GEOmap.limit | Extract from GEOmap
GEOmap.list | GEOmap to list
GEOsymbols | GEOsymbols
GEOTOPO | Topographic Plot of geographic region
getETOPO | Get Subset ETOPO Digital elevation map
getGEOmap | Get Geomap
getGEOperim | Get Lat-Lon Perimeter
getgreatarc | Great Circle Arc
getmagsize | Earthquake Magnitude based on exponentional
getnicetix | Nice Looking Lat-Lon pairs for plotting
getspline | Get a spline curve along a set of points
getsplineG | Get a spline curve along a set of points
GETXprofile | Cross sectional profile through a digital elevation map
GLOB.XY | Convert from GLOBAL LAT-LON to X-Y
GLOBE.ORTH | Plot globe with orthogonal
GlobeView | Global Plot
gmat | Globe Rotation Matrix
goodticdivs | Nice tic division

## -- H --

horseshoe | Horseshoe Symbol

## -- I --

inpoly | Test set of points for inside/outside polygon
insertNA | Insert NA in a vector
insertvec | Insert a set of values in a vector
inside | Determine if point is inside polygon
insideGEOmapXY | Get LAT-LON points that fall inside a map

## -- J --

jarea | Area of closed polygon.

## -- K --

KINOUT | Map inside-outside

## -- L --

lamaz.eqarea | Lambert-Azimuthal Equal Area
lamaz.inverse | Lambert-Azimuthal Equal Area
lambert.cc.ll | Map projection
lambert.cc.xy | Map projection
lambert.ea.ll | Map projection
lambert.ea.xy | Map projection
LandSeaCol | Land and Sea Colors
lcgc | local coordinates to Global
linesGEOmapXY | Add lines, points or text to GEOmap projected plot
Lintersect | Finder intersection of lines
list.GEOmap | List stroke points in a GEOmap
ll2xyz | LAT-LON to xyz
Lll2xyz | List Lat-Lon to cartesian XYZ
LLlabel | Nice Lat-Lon Label
LLsmallcircMap | World Map centered on Lat-Lon
LOCPOLIMAP | LOCPOLIMAP
locworld | Locate points in worlmap
Lxyz2ll | Cartesian to Lat-Lon

## -- M --

MAPconstants | Set Various Map Constants
maplim | Map Limits
maps2GEOmap | Convert maps data to GEOmap format
mapTeleSeis | World Map with Teleseismic Ray-paths
Markup | Add markup information to an existing plot
merc.sphr.ll | Map projection
merc.sphr.xy | Map projection
merid | Orthogonal Projection of Meridian or Parallel

## -- N --

niceLLtix | Nice DMS coordinates
NoOverlap | Shift Symbols
normalfault | Normal Fault trace
NSarrow | North-South Weather Vane Arrow
NSWath | Cross sectional Swaths of Earthquakes over Japan

## -- O --

ortho.proj | Orthogonal Map Projection
OverTurned | Plot Overturned fault

## -- P --

paral | Orthogonal Projection of Meridian or Parallel
perpen | perpendicular marks along line
pgon | Plot regular polygon: pentagon, hexagon, octagon
pline | Point to line distance
plotGEOmap | Plot a GEO map
plotGEOmapXY | Plot a projected GEO map
plothypos | Plot Edicenters
plotnicetix | Plot Lat-Lon tick marks
plotusa | Map of USA
plotUTM | Plot UTM
plotworldmap | Plot World Map with UTM sections
PointsAlong | Find spaced Points along a line
pointsGEOmapXY | Add lines, points or text to GEOmap projected plot
polyGEOmapXY | Add lines, points or text to GEOmap projected plot
polyintern | Internal point of polygon
printGEOinfo | printGEOinfo
printGEOmap | printGEOmap
projtype | List of Projection types

## -- R --

rectGEOmapXY | Add lines, points or text to GEOmap projected plot
rectPERIM | Extract a rectangular perimeter
rekt2line | Rectangle Line Overlap
rose | Rose Diagram
rotateGEOmap | Rotate a GEOmap
rotdelta4 | rotation about Z-axis
rotmat2D | set a rotation matrix
rotx4 | x-axis rotation matrix
roty4 | y-axis rotation matrix

## -- S --

SELGEOmap | Select parts of a GEOmap
setMarkup | Set up mark up for maps
setplotmat | set up matrices for selecting from eTOPO5
SETPOLIMAP | Set up polygons for World map Database
setPROJ | Set Projection
settopocol | Topographic Color Map
sizelegend | Magnitude size legend
sqrTICXY | Tick marks for Square plot
SSfault | Strike Slip Fault
stereo.sphr.ll | Map projection
stereo.sphr.xy | Map projection
STROKEinfo | Stroke Information
subsetTOPO | Subset a Topo map
SynAnticline | Syncline and Anticline traces

## -- T --

targetLL | Target Lat-Lon
teeth | Add Teeth to line
textGEOmapXY | Add lines, points or text to GEOmap projected plot
thrust | Thrust Fault
TOPOCOL | Create Topography ColorMAP
trans4 | Translation matrix

## -- U --

utm.elps.ll | Map projection
utm.elps.xy | Map projection
UTM.ll | Map projection
utm.sphr.ll | Map projection
utm.sphr.xy | Map projection
utm.wgs84.ll | Map projection
utm.wgs84.xy | Map projection
UTM.xy | Map projection
utmbox | Get UTM Box info
UTMzone | UTM zone information

## -- V --

vane | North-South Weather Vane Arrow

## -- X --

X.prod | Cross Product
XSECDEMg | Cross Sections Using RPMG
XSECEQ | Iinteractive earthquake cross section
XSECwin | Cross sectional plot with earthquakes projected
XY.GLOB | Convert from XY to GLOBAL LAT-LON
xyz2ll | Cartesian to Lat-Lon

## -- Z --

zebra | Horizontal Zebra Scale