This web application allows the user to merge two files into one. The design of
this web application was to provide a 4 step process in combining two LAS Files.
- The user selects the "(1) Load 2 LAS Files" Button to load each file into
the Merge LAS File Web App. The user will only be allowed to do two digital
LAS Files at a time. The Program assumes LOG ASCII STANDARD - VERSION 2.0
for the digital LAS Files.
- The user then selects the "(2) Modify LAS Header" Button to select which
digital LAS File Header to start from and to insert any missing data. The user
then selects the "Done" Button at the bottom of the dialog and the header
information is automatically transferred to the program.
- The user then selects the curves they wish in the New LAS File by selecting
the "(3) Select Curves" Button. The user has the option to use the Mnemonics
used in the original files or to use the KGS standard Mnemonics for the
LAS File Curves. This dialog provides a table containing the KGS Standard
Mnemonic name for the LAS curves. The user can then select the radio buttons
next to the curve mnemonic of each curve from each file they wish to appear
in the new LAS file. Once the user is done they only need to select the
"Done" Button and the curve information will automatically be transferred.
- The fourth and last thing they need to do is select the "(4) Create new
LAS File" Button and a dialog will display to request a filename for the
new LAS File. The new LAS File will appear in the new directory.
In merging the LAS Files there are a number of depth step size combinations that
the web app is designed to handle,
- Both LAS Files have same step values
- The LAS Files depths overlap each other
the data is sorted into the depth bins without alteration of data
- The LAS starting depths will not allow the program to match the depths
without alteration,
one file is modified to fit the depth steps, which requires interpolation
of the data.
- Both LAS Files do not have the same step value, one LAS File has a larger
step size then the second. The program will use the larger step size for
both LAS Files
Author: John R. Victorine jvictor@kgs.ku.edu