1v.select(1) Grass User's Manual v.select(1)
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6 v.select - Select features from ainput by features from binput
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9 vector
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12 v.select
13 v.select help
14 v.select [-t] ainput=name [atype=string[,string,...]] [alayer=inte‐
15 ger] binput=name [btype=string[,string,...]] [blayer=integer] out‐
16 put=name [operator=string] [--overwrite] [--verbose] [--quiet]
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18 Flags:
19 -t
20 Do not create attribute table
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22 --overwrite
23 Allow output files to overwrite existing files
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25 --verbose
26 Verbose module output
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28 --quiet
29 Quiet module output
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31 Parameters:
32 ainput=name
33 Name of input vector map
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35 atype=string[,string,...]
36 Type
37 Feature type(s)
38 Options: point,line,boundary,centroid,area
39 Default: point,line,boundary,centroid,area
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41 alayer=integer
42 Layer number
43 A single vector map can be connected to multiple database tables.
44 This number determines which table to use.
45 Default: 1
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47 binput=name
48 Name of input vector map
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50 btype=string[,string,...]
51 Type
52 Feature type(s)
53 Options: point,line,boundary,centroid,area
54 Default: point,line,boundary,centroid,area
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56 blayer=integer
57 Layer number
58 A single vector map can be connected to multiple database tables.
59 This number determines which table to use.
60 Default: 1
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62 output=name
63 Name for output vector map
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65 operator=string
66 Operator defines required relation between features. A feature is
67 written to output if the result of operation 'ainput operator bin‐
68 put' is true. An input feature is considered to be true, if cate‐
69 gory of given layer is defined.
70 overlap: features partially or completely overlap
71 Options: overlap
72 Default: overlap
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75 v.select allows the user to select features from a vector by features
76 from another one.
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80 Extract forest fire points from larger fire map:
81 v.select ainput=fire binput=forest output=forest_fire
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84 Extract Italian rivers from VMAP0 watercourses map:
85 v.select ain=watrcrsl_eurnasia_wgs84 bin=italy_area \
86 out=watrcrsl_italy op=overlap
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90 v.overlay, GRASS SQL interface
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93 Radim Blazek
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95 Last changed: $Date: 2007-03-22 09:00:33 +0100 (Thu, 22 Mar 2007) $
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97 Full index
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99 © 2003-2008 GRASS Development Team
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103GRASS 6.3.0 v.select(1)