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.TH lasinfo 1 "16 February 2019" "" ""
.SH NAME
lasinfo \- display LAS file details
.SH SYNOPSIS
'nh
.fi
.ad l
\fBlasinfo\fR \kx
.if (\nx>(\n(.l/2)) .nr x (\n(.l/5)
'in \n(.iu+\nxu
[\fB-h\fR | 
\fB-i\fR \fIarg\fR
[\fB-v\fR]
[\fB--no-vlrs\fR]
[\fB--no-schema\fR]
[\fB--no-check\fR]
[\fB--xml\fR]
[\fB-p\fR \fIarg\fR]
[\fIFiltering options\fR]
]
'in \n(.iu-\nxu
.ad b
'hy
.SH DESCRIPTION
\fBlasinfo\fR displays LAS file details with optional
output filters.
While \fBlasinfo\fR can do a few simple operations like
updating header information, more drastic changes, like removing points
or altering values, will require
\fBlas2las\fR(1).
.SH OPTIONS
lasinfo options:
.TP 
\*(T<\fB\-h\fR\*(T>, \*(T<\fB\-\-help\fR\*(T>
produce help message
.TP 
\*(T<\fB\-i\fR\*(T> \fIarg\fR, \*(T<\fB\-\-input\fR\*(T> \fIarg\fR
input LAS file
.TP 
\*(T<\fB\-v\fR\*(T>, \*(T<\fB\-\-verbose\fR\*(T>
Verbose message output
.TP 
\*(T<\fB\-\-no\-vlrs\fR\*(T>
Don't show VLRs
.TP 
\*(T<\fB\-\-no\-schema\fR\*(T>
Don't show schema
.TP 
\*(T<\fB\-\-no\-check\fR\*(T>
Don't scan points
.TP 
\*(T<\fB\-\-xml\fR\*(T>
Output as XML
.TP 
\*(T<\fB\-p\fR\*(T> \fIarg\fR, \*(T<\fB\-\-point\fR\*(T> \fIarg\fR
Display a point with a given id.
\*(T<\fB\-\-point 44\fR\*(T>
.PP
Filtering options:
.TP 
\*(T<\fB\-e\fR\*(T> \fIarg\fR, \*(T<\fB\-\-extent\fR\*(T> \fIarg\fR
Extent window that points must fall within to keep.
Use a comma-separated or quoted, space-separated list,
for example, 
\*(T<\fB\-e minx, miny, maxx, maxy\fR\*(T>
or 
\*(T<\fB\-e minx, miny, minz, maxx, maxy, maxz\fR\*(T>
\*(T<\fB\-e "minx miny minz maxx maxy maxz"\fR\*(T>
.TP 
\*(T<\fB\-\-minx\fR\*(T> \fIarg\fR
Extent must be greater than or equal to minx to be kept. 
\*(T<\fB\-\-minx 1234.0\fR\*(T>
.TP 
\*(T<\fB\-\-miny\fR\*(T> \fIarg\fR
Extent must be greater than or equal to miny to be kept. 
\*(T<\fB\-\-miny 5678.0\fR\*(T>
.TP 
\*(T<\fB\-\-minz\fR\*(T> \fIarg\fR
Extent must be greater than or equal to minz to be kept.
If maxx and maxy are set but not minz *and maxz,
all z values are kept.
\*(T<\fB\-\-minz 0.0\fR\*(T>
.TP 
\*(T<\fB\-\-maxx\fR\*(T> \fIarg\fR
Extent must be less than or equal to maxx to be kept. 
\*(T<\fB\-\-maxx 1234.0\fR\*(T>
.TP 
\*(T<\fB\-\-maxy\fR\*(T> \fIarg\fR
Extent must be less than or equal to maxy to be kept. 
\*(T<\fB\-\-maxy 5678.0\fR\*(T>
.TP 
\*(T<\fB\-\-maxz\fR\*(T> \fIarg\fR
Extent must be less than or equal to maxz to be kept. 
If maxx and maxy are set but not maxz *and minz,
all z values are kept. 
\*(T<\fB\-\-maxz 10.0\fR\*(T>
.TP 
\*(T<\fB\-t\fR\*(T> \fIarg\fR, \*(T<\fB\-\-thin\fR\*(T> \fIarg\fR (=0)
Simple decimation-style thinning.
Thin the file by removing every t'th point from the file.
.TP 
\*(T<\fB\-\-last_return_only\fR\*(T>
Keep last returns
(cannot be used with \*(T<\fB\-\-first_return_only\fR\*(T>)
.TP 
\*(T<\fB\-\-first_return_only\fR\*(T>
Keep first returns
(cannot be used with \*(T<\fB\-\-last_return_only\fR\*(T>)
.TP 
\*(T<\fB\-\-keep\-returns\fR\*(T> \fIarg\fR
A list of return numbers to keep in the output file: 
\*(T<\fB\-\-keep\-returns 1 2 3\fR\*(T>
.TP 
\*(T<\fB\-\-drop\-returns\fR\*(T> \fIarg\fR
Return numbers to drop.
For example, \*(T<\fB\-\-drop\-returns 2 3 4 5\fR\*(T>
.TP 
\*(T<\fB\-\-valid_only\fR\*(T>
Keep only valid points
.TP 
\*(T<\fB\-\-keep\-classes\fR\*(T> \fIarg\fR
A list of classifications to keep:
\*(T<\fB\-\-keep\-classes 2 4 12\fR\*(T>
\*(T<\fB\-\-keep\-classes 2\fR\*(T>
.TP 
\*(T<\fB\-\-drop\-classes\fR\*(T> \fIarg\fR
A comma-separated list of classifications to drop:
\*(T<\fB\-\-drop\-classes 1,7,8\fR\*(T>
\*(T<\fB\-\-drop\-classes 2\fR\*(T>
.TP 
\*(T<\fB\-\-keep\-intensity\fR\*(T> \fIarg\fR
Range in which to keep intensity.
The following expression types are supported: 
\*(T<\fB\-\-keep\-intensity 0\-100\fR\*(T>
\*(T<\fB\-\-keep\-intensity <200\fR\*(T>
\*(T<\fB\-\-keep\-intensity >400\fR\*(T>
\*(T<\fB\-\-keep\-intensity >=200\fR\*(T>
.TP 
\*(T<\fB\-\-drop\-intensity\fR\*(T> \fIarg\fR
Range in which to drop intensity.
The following expression types are supported: 
\*(T<\fB\-\-drop\-intensity <200\fR\*(T>
\*(T<\fB\-\-drop\-intensity >400\fR\*(T>
\*(T<\fB\-\-drop\-intensity >=200\fR\*(T>
.TP 
\*(T<\fB\-\-keep\-time\fR\*(T> \fIarg\fR
Range in which to keep time.
The following expression types are supported: 
\*(T<\fB\-\-keep\-time 413665.2336\-414092.8462\fR\*(T>
\*(T<\fB\-\-keep\-time <414094.8462\fR\*(T>
\*(T<\fB\-\-keep\-time >413665.2336\fR\*(T>
\*(T<\fB\-\-keep\-time >=413665.2336\fR\*(T>
.TP 
\*(T<\fB\-\-drop\-time\fR\*(T> \fIarg\fR
Range in which to drop time.
The following expression types are supported: 
\*(T<\fB\-\-drop\-time <413666.2336\fR\*(T>
\*(T<\fB\-\-drop\-time >413665.2336\fR\*(T>
\*(T<\fB\-\-drop\-time >=413665.2336\fR\*(T>
.TP 
\*(T<\fB\-\-keep\-scan\-angle\fR\*(T> \fIarg\fR
Range in which to keep scan angle.
The following expression types are supported: 
\*(T<\fB\-\-keep\-scan\-angle 0\-100\fR\*(T>
\*(T<\fB\-\-keep\-scan\-angle <100\fR\*(T>
\*(T<\fB\-\-keep\-scan\-angle <=100\fR\*(T>
.TP 
\*(T<\fB\-\-drop\-scan\-angle\fR\*(T> \fIarg\fR
Range in which to drop scan angle.
The following expression types are supported: 
\*(T<\fB\-\-drop\-scan\-angle <30\fR\*(T>
\*(T<\fB\-\-drop\-scan\-angle >100\fR\*(T>
\*(T<\fB\-\-drop\-scan\-angle >=100\fR\*(T>
.TP 
\*(T<\fB\-\-keep\-color\fR\*(T> \fIarg\fR
Range in which to keep colors.
Define colors as two 3-tuples (R,G,B-R,G,B): 
\*(T<\fB\-\-keep\-color '0,0,0\-125,125,125'\fR\*(T>
.TP 
\*(T<\fB\-\-drop\-color\fR\*(T> \fIarg\fR
Range in which to drop colors.
Define colors as two 3-tuples (R,G,B-R,G,B): 
\*(T<\fB\-\-drop\-color '255,255,255\-65536,65536,65536'\fR\*(T>
.SH EXAMPLE
\fBExample data\fR

Visit the libLAS sample library for LiDAR data in LAS format:
\(lahttp://liblas.org/samples/\(ra