Yield
Check
An Algorithm for
Filtering Yield Monitor Data
Gregorio
Simbahan & Achim Dobermann
Department
of Agronomy and Horticulture
University
of Nebraska-Lincoln
Yield
Check is a software
for screening geo-referenced yield monitor data. It detects six common types of
erroneous yield monitor values: 1) combine header status up, (2)
start-/end-pass delays, (3) grain flow, distance traveled, and grain moisture
outliers, (4) values exceeding minimum and maximum biological yield limits, (5)
local neighborhood outliers, and (6) short segments and co-located points.
Erroneous values are either deleted or flagged for further analysis to identify
where they have occurred in the field. The output file can then be used in
other commercial mapping software to create a yield map or maps of the
different categories of erroneous yield values. Yield Check is provides
‘as is’, with little flexibility in input and output data formats and a simple
graphical user interface. Other commercial software is recommended for pre-processing
yield monitor raw data before running the Yield Check. Input data must
be in a text file that follows the AgLeader advanced export format. Yield Check
was written in Visual Basic 6 and we encourage the use of the algorithm in
commercial yield mapping software. For further inquires, please contact:
Achim Dobermann
Department of Agronomy
& Horticulture
University of Nebraska-Lincoln
P.O. Box 830915, Lincoln, NE
68583-0915, USA
Phone: +1-402-4721501, Fax:
+1-402-4727904, E-mail: adobermann2@unl.edu
Suggested
citation: Simbahan,
G.C., and A. Dobermann. 2004. Yield Check – An algorithm for filtering of
yield monitor data. Lincoln, NE: University of Nebraska-Lincoln. http://soilfertility.unl.edu
Copyright 2004 by University of
Nebraska-Lincoln. All rights reserved.
Installation
Yield
Check requires about 3 MB of free hard disk space and should run on any PC
under Windows 98SE, NT, 2000, or XP.
Yield Check does not come with an automatic setup program. Instead,
please follow the instructions below for manual installation:
1.
Download
or copy file chkyield.zip to a folder of your choice.
2.
Using
Windows Explorer, create a new folder c:\chkyield in the main (c:) hard
drive of your computer.
3.
Un-zip
all files contained in chkyield.zip into the newly created folder c:\chkyield. The folder will
now contain the following files files:
YieldCheck.exe the
executable program file
Crop.dat file
containing default parameters for different crops (txt file)
Criteria.dat file
containing default filtering criteria (txt file)
Example_in.txt an
example data input file
Example_out1.txt an example of a basic output data
file
Example_out2.txt an example of a detailed output data
file
YieldCheck.pdf User’s
Guide
4.
You
can run Yield Check by double-clicking on YieldCheck.exe
5. Alternatively, use a right-mouse click to create a shortcut, drag it on your desktop, and start the program by double-clicking on the shortcut.
TERMS OF USE
By accessing or using this software, you agree to these
terms of use. If you do not agree to
these terms you may not use this software.
All content included in this software, such as
text, graphics, logos, button icons, images, as well as any compilation in form
of collection, arrangement, and assembly is the exclusive property of
University of Nebraska-Lincoln and protected by United States copyright laws.
This software may be used as a resource for processing yield map data. Any
other use, including the reproduction, modification, distribution, transmission,
republication, display or performance, of the content is strictly prohibited.
GRANT. Subject to payment
of applicable license fees, UNL hereby grants to you a non-exclusive license to
the Software and accompanying documentation (Documentation) on the terms
below. This license does not grant you
any rights to enhancement or update. You may use the Software on any single
computer or copy the Software for archival purposes, provided the archival copy
contains all of the original Software's proprietary notices. You may not permit
other individuals to use the Software except under the terms listed above;
modify, translate, reverse engineer, decompile, disassemble (except to the
extent applicable laws specifically prohibit such restriction), or create
derivative works based on the Software or Documentation; copy the Software or
Documentation (except as specified above); rent, lease, transfer or otherwise
transfer rights to the Software or Documentation; or remove any proprietary
notices or labels on the Software or Documentation.
Disclaimer
LIMITATION OF LIABILITY. UNDER NO CIRCUMSTANCES AND UNDER NO
LEGAL THEORY, TORT, CONTRACT, OR OTHERWISE, SHALL THE BOARD OF REGENTS OF THE
UNIVERSITY OF NEBRASKA, UNL OR ANY OF ITS AFFILIATES, EMPLOYEES OR OTHER REPRESENTATIVES
BE LIABLE TO YOU OR ANY OTHER PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION, DAMAGES
FOR LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR MALFUNCTION, OR ANY
AND ALL OTHER COMMERCIAL DAMAGES OR LOSSES, SPECIFICALLY INCLUDING DAMAGES TO
CROPS AND SOIL RESULTING FROM THE APPLICATION OF THE SOFTWARE, EVEN IF UNL
SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF SUCH DAMAGES, OR FOR ANY CLAIM
BY ANY OTHER PARTY. THIS LIMITATION OF LIABILITY SHALL NOT APPLY TO LIABILITY
FOR DEATH OR PERSONAL INJURY TO THE EXTENT APPLICABLE LAW PROHIBITS SUCH
LIMITATION. FURTHERMORE, SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION
OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THIS LIMITATION AND EXCLUSION MAY
NOT APPLY TO YOU.