First steps with C-N-P
For a deeper insight into the complex processes of breaking down fresh organic matter in soil, use the following
LINK on shiny
with a turnover demonstration for two different FOM pools
Here are some downloads for experimental (private) use. The use is only permitted with the consent of the author and is at your own risk. The author refuses all liability for any malfunctions that may occur and their possible consequences.
Prerequisite for using the C-N-P software is access to a PostgreSQL server - which can also run on the local system without an Internet connection.
... more information about Postgres can be found
under this link
and here is some
help with Postgres installation
and off we go with C-N-P
If there are difficulties finding the required file libpq.dylib on a MAC, the following notice may help:
1. Open a terminal
2. search the data using: locate libpq.dylib | grep /lib
3. possibly it is necessary to execute the following command beforehand;
sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.locate.plist
... it is strongly recommend to read at first the manual
(last update:30.03.2023 12:19:28, filesize: 3856142 Byte )
...if data is already available, you sometimes want to copy it. Get here some hints how it may be done
(last update:22.07.2021 17:11:50, filesize: 6495019 Byte )
Please find below the download links for the desired platform
After downloading, the zip file should be unpacked into a directory with write permissions. Before using the model itself, you must first start cnp_prepare, which sets up a database on the Postgres server, creates an user account and writes an ini-file. After this step proceed with cnpx_GUI
Modifications to cnp_prepare
| date | comment |
| 27.10.2021 | new feature on cnp_prepare to search the pg library |
| 13.07.2022 | bugfix and update on cdy_prepare |
| 30.07.2021 | several bugfixes, adaptation of data structure |
| 20.09.2022 | improvement of the 64bit version |
Modifications to cnpx_gui
| date | comment |
| 06.07.2021 | bugfix: calculation of initial SOM for stony soils |
| 10.07.2021 | new: copy function on plot level |
| 12.07.2021 | new: linear regression of observations |
| 12.07.2021 | new: improved handling of conspicious values
|
| 17.09.2021 | bugfix: ploughing up and processing of crop communities |
| 17.09.2021 | new: changed treeview behaviour |
| 19.09.2021 | changed soil data edit ; bugfix für treeview |
| 21.09.2021 | improved: copy active plot |
| 27.10.2021 | several improvements and bugfixes |
| 27.04.2022 | several improvements in P-model and RepIX initialization |
| 11.07.2022 | bugfix for auto input of by-products (macode 9) |
| 30.07.2022 | bugfix for sqlite import |
| 25.10.2022 | i.a. bugfix climate data pasting |
| 01.11.2022 | bugfix for missing silt values |
| 05.01.2023 | bugfix for mixed up pore size input fields |
| 21.01.2023 | bugfix and web version compare |
| 05.03.2023 | bugfixes, catch crops and perm. grassland new implemented; not for W32 !! |
| 09.03.2023 | bugfix in balance calculation; cyclic runs re-activated; not for W32 !! |
| 14.03.2023 | bugfix and improvement of git interface |
| 29.03.2023 | improvementof STEP mode (see manual) |
C-N-P software pack for windows x86 (32 bit) as ZIP download
(last update:21.01.2023 20:17:04, filesize: 21715500 Byte )
C-N-P software pack for windows W64 (64 bit) as ZIP download
(last update:30.03.2023 13:12:29, filesize: 24282637 Byte )
C-N-P software pack for MacOS (64 bit) as ZIP download
(last update:30.03.2023 13:11:03, filesize: 27324540 Byte )