lastool - a simple GUI for LAStools (one tool to rule them all)

[Martin Isenburg]

Hello,

lastool is a simple GUI that makes LAStools more accessible to those
who are not comfortable working the command line. It also makes it
more intuitive to with multiple LAS files that belong to the same
collection as you can see in this screen-shot here:

http://www.cs.unc.edu/~isenburg/lastools/download/pics/lastool_gui.png

To get the new GUI simply download the latest version of LAStools:

http://www.cs.unc.edu/~isenburg/lastools/download/lastools.zip

Just start "lastool.exe" via double-click and you're good to go. This
is a beta release and I still expect there to be a few bugs or
confusions. I'd appreciate if you let me know when you run into
trouble.

Regards,

Martin @lastools

PS: lastool.exe needs to be in the same folder as GLUT.dll and all the
LAStools *.exe binaries

[Martin Isenburg]

hi,

you guys are quick. the first release had one big bug [1] and one
important feature missing [2] that severely limited the utility of the
tool. it has been fixed. To get the fixed GUI simply download the
latest version of LAStools (once more):

http://www.cs.unc.edu/~isenburg/lastools/download/lastools.zip

sorry.

martin @lastools

[1] the option for merging multiple LAS files was broken
[2] it was not possible to browse files on other hard-drives

[FJoyal]

So amazing Martin!

Thank you so much!
Frank

[Martin Isenburg]

hi,

four more bugs [1-4] were identified. they have been fixed. the update
is online.

http://www.cs.unc.edu/~isenburg/lastools/download/lastools.zip

have a good weekend.

martin

[1] there was a bug in the file browser (actually a bug in GLUI)
[2] las2dem was choking on the '-elevation' flag
[3] lastile was choking on the '-olas' and '-otxt' flags
[4] missing output selection for lassort

[Martin Isenburg]

hi,

some new lastool updates:

* support for lasclip with visualization of SHP/TXT clip polygon
* lassort supports sorting LAS points based on their GPS time
* lasheight can drop points based on height above ground TIN
* lastile can visualize the resulting tiling
* two more bugs [1,2] were identified and fixed

http://www.cs.unc.edu/~isenburg/lastools/download/lastools.zip

have a good weekend.

martin

[1] another bug in the file browser (actually a bug in GLUI)
[2] miss-named JPG/PNG/TIF files in some KMLs of lasgrid & las2dem

[Martin Isenburg]

Hello,

another "lastool" update: There is a new roll-out bar called "set
projection" that allows you to specify projection information. This is
subsequently used to produce correct KML files or to populate the LAS/
LAZ file header on output. Note that this does *not* re-project (*).
But it seems that many LAS files still do not the LASF_Projection VLR
or contains wrong or insufficient information. Here is how it looks

http://www.cs.unc.edu/~isenburg/lastools/download/pics/lastool_proj.png

Also most command-line tools now support adding projection
information. For example to add the UTM zone 11T or state plane NAD83
of Ohio South or others to a LAS file while compressing simply run
something like

laszip -i lidar.las -utm 11T
laszip -i lidar.las -sp83 OH_S
laszip -i lidar.las -longlat
laszip -i lidar.las -sp27 CA_II
laszip -i lidar.las -lcc 1640416.666667 0 survey_feet 47.000000
-120.833333 47.5 48.733333
laszip -i lidar.las -tm 500000 0 meter 0 -93 0.99996

this also works with las2las, lasmerge, lasthin, lassort, lastile,
las2dem, lasgrid, las2iso, lasboundary, ...

Regards,

Martin @lastools

(*) re-projecting is currently only possible with las2las in the
command-line

PS: Just start "lastool.exe" via double-click and you're good to go.
You can download the latest version of LAStools and the GUI here:
http://www.cs.unc.edu/~isenburg/lastools/download/lastools.zip