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       d.vect  - Displays user-specified vector map in the active graphics frame.


       display, graphics, vector


       d.vect --help
       d.vect       [-cir]       map=name        [layer=string]       display=string[,string,...]
       [type=string[,string,...]]       [cats=range]        [where=sql_query]        [color=name]
       [fill_color=name]         [rgb_column=name]         [zcolor=style]         [width=integer]
       [width_column=name]         [width_scale=float]         [icon=string]         [size=float]
       [size_column=name]               [rotation_column=name]               [label_layer=string]
       [attribute_column=name]   [label_color=name]   [label_bgcolor=name]    [label_bcolor=name]
       [label_size=integer]    [font=string]    [encoding=string]   [xref=string]   [yref=string]
       [minreg=float]   [maxreg=float]   [--help]  [--verbose]  [--quiet]  [--ui]

           Random colors according to category number (or layer number if ’layer=-1’ is given)

           Use values from ’cats’ option as feature id

           Use square root of the value of size_column
           This makes circle areas proportionate to the  size_column  values  instead  of  circle

           Print usage summary

           Verbose module output

           Quiet module output

           Force launching GUI dialog

       map=name [required]
           Name of vector map
           Or data source for direct OGR access

           Layer number or name (’-1’ for all layers)
           A  single  vector  map  can  be  connected  to  multiple  database tables. This number
           determines which table to use. When used with direct OGR  access  this  is  the  layer
           Default: 1

       display=string[,string,...] [required]
           Options: shape, cat, topo, vert, dir, zcoor
           Default: shape
           shape: Display geometry of features
           cat: Display category numbers of features
           topo: Display topology information (nodes, edges)
           vert: Display vertices of features
           dir: Display direction of linear features
           zcoor: Display z-coordinate of features (only for 3D vector maps)

           Input feature type
           Options: point, line, boundary, centroid, area, face
           Default: point,line,boundary,area,face

           Category values
           Example: 1,3,7-9,13

           WHERE conditions of SQL statement without ’where’ keyword
           Example: income < 1000 and inhab >= 10000

           Feature color
           Either a standard color name, R:G:B triplet, or "none"
           Default: black

           Area fill color
           Either a standard color name, R:G:B triplet, or "none"
           Default: 200:200:200

           Colorize features according color definition column
           Color definition in R:G:B form

           Colorize point or area features according to z-coordinate
           Options:  aspect, aspectcolr, bcyr, bgyr, blues, byg, byr, celsius, corine, curvature,
           differences, elevation, etopo2, evi, fahrenheit, gdd, greens, grey, grey.eq, grey.log,
           grey1.0,   grey255,   gyr,   haxby,   kelvin,   ndvi,   ndwi,   oranges,   population,
           population_dens, precipitation, precipitation_daily,  precipitation_monthly,  rainbow,
           ramp, random, reds, rstcurv, ryb, ryg, sepia, slope, srtm, srtm_plus, terrain, wave
           aspect: aspect oriented grey colors
           aspectcolr: aspect oriented rainbow colors
           bcyr: blue through cyan through yellow to red
           bgyr: blue through green through yellow to red
           blues: white to blue
           byg: blue through yellow to green
           byr: blue through yellow to red
           celsius: blue to red for degree Celsius temperature
           corine: EU Corine land cover colors
           curvature: for terrain curvatures (from and r.slope.aspect)
           differences: differences oriented colors
           elevation: maps relative ranges of raster values to elevation color ramp
           etopo2: colors for ETOPO2 worldwide bathymetry/topography
           evi: enhanced vegetative index colors
           fahrenheit: blue to red for Fahrenheit temperature
           gdd: accumulated growing degree days
           greens: white to green
           grey: grey scale
           grey.eq: histogram-equalized grey scale
           grey.log: histogram logarithmic transformed grey scale
           grey1.0: grey scale for raster values between 0.0-1.0
           grey255: grey scale for raster values between 0-255
           gyr: green through yellow to red
           haxby: relative colors for bathymetry or topography
           kelvin: blue to red for temperature in Kelvin scale
           ndvi: Normalized Difference Vegetation Index colors
           ndwi: Normalized Difference Water Index colors
           oranges: white to orange
           population: color table covering human population classification breaks
           population_dens: color table covering human population density classification breaks
           precipitation: precipitation color table (0..2000mm)
           precipitation_daily: precipitation color table (0..1000mm)
           precipitation_monthly: precipitation color table (0..1000mm)
           rainbow: rainbow color table
           ramp: color ramp
           random: random color table
           reds: white to red
           rstcurv: terrain curvature (from r.resamp.rst)
           ryb: red through yellow to blue
           ryg: red through yellow to green
           sepia: yellowish-brown through to white
           slope: r.slope.aspect-type slope colors for raster values 0-90
           srtm: color palette for Shuttle Radar Topography Mission elevation
           srtm_plus: color palette for Shuttle Radar Topography Mission elevation (with seafloor
           terrain: global elevation color table covering -11000 to +8850m
           wave: color wave

           Line width
           Default: 0

           Name of numeric column containing line width
           These values will be scaled by width_scale

           Scale factor for width_column
           Default: 1

           Point and centroid symbol
           Options:   basic/arrow1,   basic/arrow2,   basic/arrow3,   basic/box,    basic/circle,
           basic/cross1,  basic/cross2, basic/cross3, basic/diamond, basic/marker, basic/octagon,
           basic/point,  basic/pushpin,  basic/star,  basic/triangle,  basic/x,  demo/muchomurka,
           demo/smrk,  extra/4pt_star, extra/adcp, extra/airport, extra/alpha_flag, extra/bridge,
           extra/dim_arrow,   extra/dive_flag,   extra/fiducial,   extra/fish,    extra/half-box,
           extra/half-circle, extra/offbox_ne, extra/offbox_nw, extra/offbox_se, extra/offbox_sw,
           extra/pentagon,    extra/ping,     extra/ring,     extra/simple_zia,     extra/target,
           geology/circle_cross,        geology/half-arrow_left,        geology/half-arrow_right,
           geology/strike_box,          geology/strike_circle,           geology/strike_cleavage,
           geology/strike_half-bowtie,        geology/strike_line,       geology/strike_parallel,
           geology/strike_triangle,        n_arrows/basic_compass,        n_arrows/fancy_compass,
           n_arrows/n_arrow1a,    n_arrows/n_arrow1b,    n_arrows/n_arrow2,    n_arrows/n_arrow3,
           n_arrows/n_arrow4,    n_arrows/n_arrow5,    n_arrows/n_arrow6,     n_arrows/n_arrow7a,
           n_arrows/n_arrow7b, n_arrows/n_arrow8a, n_arrows/n_arrow8b, n_arrows/n_arrow9
           Default: basic/x

           Symbol size
           When used with the size_column option this becomes the scale factor
           Default: 5

           Name of numeric column containing symbol size

           Name of numeric column containing symbol rotation angle
           Measured in degrees CCW from east

           Layer number for labels (default: the given layer number)
           Vector  features  can have category values in different layers. This number determines
           which layer to use. When used with direct OGR access this is the layer name.
           Default: 1

           Name of column to be displayed as a label

           Label color
           Either a standard color name or R:G:B triplet
           Default: red

           Label background color
           Either a standard color name, R:G:B triplet, or "none"
           Default: none

           Label border color
           Either a standard color name, R:G:B triplet, or "none"
           Default: none

           Label size (pixels)
           Default: 8

           Font name

           Text encoding

           Label horizontal justification
           Options: left, center, right
           Default: left

           Label vertical justification
           Options: top, center, bottom
           Default: center

           Minimum region size (average from height and width) when map is displayed

           Maximum region size (average from height and width) when map is displayed


       d.vect displays vector maps in the active frame on the graphics monitor.


       d.vect can simply be used typing d.vect map=vector_map.  There  are  a  large  variety  of
       optional  parameters which allow the user to specify vector type, colors, data fields, SQL
       queries, label size and justification, etc.

       By default d.vect areas are filled with fill_color and outlined with color. Area  outlines
       can be suppressed with
       d.vect map=vector_map color=none
       and areas can be made transparent with
       d.vect map=vector_map fill_color=none

       In order to display attributes in the map, attribute_column must be specified.

       Feature  colors  may  be specified by v.colors in a form of color table or in an attribute
       table column containing RRR:GGG:BBB values.

       A table for a vector map might look like this: sql="select * from testisola"
       0|no data|255:255:255
       139|PERGINE VALSUGANA|223:45:237

       To add the GRASSRGB color column, use v.db.addcolumn:
       v.db.addcolumn map=testisola columns="GRASSRGB varchar(11)"

       To add/change a color, use v.db.update:
       v.db.update map=testisola column=GRASSRGB value="123:45:237" where="cat=139"

       A much simpler method of color coding is by  using  the  -c  flag  which  displays  vector
       elements of like category number with a random color.

       This  module  can  use  FreeType/TrueType  fonts  if  they have already been selected with

       Parameter width is set by default to ’0’. XDRIVER  specifies  the  precise  behaviour  for
       non-zero line width, but drivers have some freedom as to how zero-width lines are handled,
       so they can use the hardware’s "thin line" drawing primitive, if it has one.  A  width  of
       zero  can  potentially result in significantly faster operation. On drivers where there is
       no such thing as a "thin" line, the driver will use a sensible default (which might not be
       the same as ’1’).


       Spearfish examples:
       # display roads with category numbers:
       d.vect map=roads display=shape,cat label_color=green
       # display randomly colorized soils map with attributes
       d.vect -c map=soils attribute_column=label
       # display randomly colorized selected vectors from soils map
       d.vect -c map=soils where="label=’VBF’" display=shape attribute_column=label

       3D points, 3D lines and 3D polygons colorized according to z height:
       g.region raster=elevation.10m
       r.random input=elevation.10m n=5000 vector=random3d -d
       d.mon start=x0
       # display as black points
       d.vect map=random3d
       # display 3D points colorized according to z height
       d.vect map=random3d zcolor=gyr
       # 3D contour lines
       r.contour input=elevation.10m output=contour20m step=20
       d.vect map=contour20m zcolor=gyr
       # generate 3D triangles
       v.delaunay input=random3d output=random3d_del
       # display 3D polygons colorized according to z height
       d.vect map=random3d_del type=area zcolor=gyr


        v.colors, d.erase, d.rast, v.colors, v.db.addcolumn, v.db.update

        GRASS SQL interface


       Radim Blazek, ITC-Irst, Trento, Italy
       Support for color tables by Martin Landa, Czech Technical University in Prague (8/2011)
       and many other GRASS developers

       Last changed: $Date: 2014-12-19 22:55:37 +0100 (Fri, 19 Dec 2014) $

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