liblas::LASHeader Class Reference

Range of allowed ASPRS LAS file format versions.

Enumerator:

eVersionMajorMin	Minimum of major component.
eVersionMajorMax	Maximum of major component.
eVersionMinorMin	Minimum of minor component.
eVersionMinorMax	Maximum of minor component.

Definition at line 69 of file lasheader.hpp.

Versions of point record format.

Enumerator:

ePointFormat0	Point Data Format 0.
ePointFormat1	Point Data Format 1.

Definition at line 78 of file lasheader.hpp.

Number of bytes of point record storage in particular format.

Enumerator:

ePointSize0	Size of point record in data format 0.
ePointSize1	Size of point record in data format 1.

Definition at line 85 of file lasheader.hpp.

Default constructor.

The default constructed header is configured according to the ASPRS LAS 1.1 Specification, point data format set to 0. Other fields filled with 0.

Copy constructor.

Assignment operator.

Comparison operator.

Get ASPRS LAS file signature.

Returns:

4-characters long string - "LASF".

Set ASPRS LAS file signature.

The only value allowed as file signature is "LASF", defined as FileSignature constant.

Exceptions:

std::invalid_argument

- if invalid signature given.

Parameters:

v

- string contains file signature, at least 4-bytes long with "LASF" as first four bytes.

Get file source identifier.

Exceptions:

No

throw

Set file source identifier.

Parameters:

v

- should be set to a value between 1 and 65535.

Exceptions:

No

throw

Todo:

TODO: Should we warn or throw about type overflow when user passes 65535 + 1 = 0

Get value field reserved by the ASPRS LAS Specification.

Note:

This field is always filled with 0.

Todo:

TODO: Should we warn or throw about type overflow when user passes 65535 + 1 = 0

Set reserved value for the header identifier.

Parameters:

v

- should be set to a value between 1 and 65535.

Exceptions:

No

throw

Get project identifier.

Returns:

Global Unique Identifier as an instance of liblas::guid class.

Set project identifier.

Get major component of version of LAS format.

Returns:

Always 1 is returned as the only valid value.

Set major component of version of LAS format.

Exceptions:

std::out_of_range

- invalid value given.

Parameters:

v

- value between eVersionMajorMin and eVersionMajorMax.

Get minor component of version of LAS format.

Returns:

Valid values are 1 or 0.

Set minor component of version of LAS format.

Exceptions:

std::out_of_range

- invalid value given.

Parameters:

v

- value between eVersionMinorMin and eVersionMinorMax.

Get system identifier.

Default value is "libLAS" specified as the SystemIdentifier constant.

Parameters:

pad

- if true the returned string is padded right with spaces and its length is 32 bytes, if false (default) no padding occurs and length of the returned string is <= 32 bytes.

Returns:

value of system identifier field.

Set system identifier.

Exceptions:

std::invalid_argument

- if identifier longer than 32 bytes.

Parameters:

v

- system identifiers string.

Get software identifier.

Default value is "libLAS 1.0", specified as the SoftwareIdentifier constant.

Parameters:

pad

- if true the returned string is padded right with spaces and its length is 32 bytes, if false (default) no padding occurs and length of the returned string is <= 32 bytes.

Returns:

value of generating software identifier field.

Set software identifier.

Exceptions:

std::invalid_argument

- if identifier is longer than 32 bytes.

Parameters:

v

- software identifiers string.

Get day of year of file creation date.

Todo:

TODO: Use full date structure instead of Julian date number.

Set day of year of file creation date.

Exceptions:

std::out_of_range

- given value is higher than number 366.

Todo:

TODO: Use full date structure instead of Julian date number.

Set year of file creation date.

Todo:

TODO: Remove if full date structure is used.

Get year of file creation date.

Exceptions:

std::out_of_range

- given value is higher than number 9999.

Todo:

TODO: Remove if full date structure is used.

Get number of bytes of generic verion of public header block storage.

Standard version of the public header block is 227 bytes long.

Get number of bytes from the beginning to the first point record.

Set number of bytes from the beginning to the first point record.

Exceptions:

std::out_of_range

- if given offset is bigger than 227+2 bytes for the LAS 1.0 format and 227 bytes for the LAS 1.1 format.

Get number of variable-length records.

Set number of variable-length records.

Get identifier of point data (record) format.

Set identifier of point data (record) format.

Todo:

To be documented

Get total number of point records stored in the LAS file.

Set number of point records that will be stored in a new LAS file.

Get array of the total point records per return.

Set values of 5-elements array of total point records per return.

Exceptions:

std::out_of_range

- if index is bigger than 4.

Parameters:

	index	- subscript (0-4) of array element being updated.
	v	- new value to assign to array element identified by index.

Get scale factor for X coordinate.

Get scale factor for Y coordinate.

Get scale factor for Z coordinate.

Set values of scale factor for X, Y and Z coordinates.

Get X coordinate offset.

Get Y coordinate offset.

Get Z coordinate offset.

Set values of X, Y and Z coordinates offset.

Get minimum value of extent of X coordinate.

Get maximum value of extent of X coordinate.

Get minimum value of extent of Y coordinate.

Get maximum value of extent of Y coordinate.

Get minimum value of extent of Z coordinate.

Get maximum value of extent of Z coordinate.

Set maximum values of extent of X, Y and Z coordinates.

Set minimum values of extent of X, Y and Z coordinates.

Adds a variable length record to the header.

Returns a VLR.

Removes a VLR from the the header.

Fetch the georeference as a PROJ.4 definition string.

Set the georeference as a proj.4 string.

Rewrite variable-length record with georeference infomation, if available.

Official signature of ASPRS LAS file format, always "LASF".

Definition at line 92 of file lasheader.hpp.

Default system identifier used by libLAS, always "libLAS".

Definition at line 95 of file lasheader.hpp.

Default software identifier used by libLAS, always "libLAS X.Y".

Definition at line 98 of file lasheader.hpp.