IMAG Drift Calculator
version and debug history

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version 1.2 [release 1.2.001/2003.05.26]
date: May 26, 2003
In this update the following changes took place:

• BUG FIX: in the Refined NL and FOCUS-like scenarios, the calculation of a crop free zone for a potato (equivalent) crop with an application using a raised boom, always gave the answer: 'no crop free zone necessary', even when very low drift values were entered. This bug is fixed in the present release, now giving the right crop free zone.
• minor changes in the readme files and the online help (IDC.hlp), mainly to link these files to the ID number of the new release. The user manual (IDCmanual.pdf) is not updated yet, since the bug fix described above does not affect user actions.

version 1.1 [release 1.1.001/2003.02.05]
date: February 5, 2003
In this update the following changes took place:

• A major change in this update is the implementation of the recently extended list of crops and applications as used by the CTB. In version 1.0 only three general crop types could be selected; now this is extended up to 21 situations (crops and applications).
• The file structure of saved data is extended with one line to define 'crop stage' (in the text block for crop related parameters).

version 1.0 [release 1.0.002/2002.11.01]
date: November 11, 2002
In this first update the following changes took place (including a few bug fixes):

• BUG: when fruit trees were selected in the Refined NL scenario window, the calculator memorised this even after leaving this window and going to FOCUS-like scenarios. Being still in 'fruit-type' mode, drift calculations for FOCUS-like scenarios resulted in wrong answers. This bug was fixed in the present release.
• The previous (first) version of the calculator used a slash as the separator in file paths. Though this gave no errors, using the proper Windows/DOS syntax was thought to be the better way. Therefore slashes were replaced by backslashes. No effect on performance was observed.
• A few changes involved the deletion of unused routines and some variables. No effect on performance was observed.
• Upon opening the FOCUS-like scenario window for the first time (per session), no information was given about the equivalent crop. This small bug was fixed, now showing a message box with information about the equivalent crop, each time the FOCUS-like calculation window is opened. No effect on performance was observed.

version 1.0 [release 1.0.001/2002.09.24]
date: September 24, 2002
First release, inside the release of Alterra's SWASH/TOXSWA software package. All releases are still considered 'beta', and only available for a selected group of users for testing purposes.