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N_Values (Winter)
To use the N values as a part of 12d Models Survey Data Reduction (SDR) in NSW,ACT or SA. For other Australian States, please refer to links at the bottom of this post.
1st step: Download the following data.
password: EXDSWinter
Contained in the zip file are the necessary files to support both MGA94 and MGA2020. The data is a series of tiles (they correspond to the 1:250000 map series) from which 12d interpolates the N Values.
When you extract it please extract it to C:\ It contains full paths within the file, and will place config files into both V12 and V14.
Right click on the zip file, choose extract all, and enter C:\[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_single_image image=”7269″ img_size=”medium” alignment=”center”][vc_single_image image=”7270″ img_size=”medium” alignment=”center”][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]It will set up the .dat files in an area common to both V12 and V14. Pleas delete any other winter/n_values folders in either 12 or 14 if you nave previously installed them to free up space on your harddrive.[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_single_image image=”7537″ img_size=”full”][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]
V12
Please note V12 only has support for MGA 94, for use in MGA 2020 V14 is essential
For V12 the following needs to ne set in your env.4d file[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_single_image image=”7540″ img_size=”full”][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]
V14
In version 14 the following changes will need to be made to your env.4d file:
[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_single_image image=”7544″ img_size=”full”][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]If you are using an env_config file then the following 2 rows can be added:
WINTER_DATA_AUSGeoid09_4D Edited C:\12d\Winter_data\WINTER_DATA_AUSGeoid09
WINTER_DATA_AUSGeoid2020_4D Edited C:\12d\Winter_data\WINTER_DATA_AUSGeoid2020[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_single_image image=”7547″ img_size=”full”][/vc_column][/vc_row][vc_row][vc_column][vc_separator][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]
For the N_Value files for other Australian States.
Queensland – TMR provide the files as part of their customisation. When installed the files will be located in the following directory “C:\ProgramData\TMR\12d.Model\V14.1.1\User_Lib\Survey\Winter_data”.
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