DSD-INT 2018 iMOD version 4.3 double precision big coordinates - Vermeulen

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Presentation by Peter Vermeulen (Deltares) at the iMOD International User Day 2018, during Delft Software Days - Edition 2018. Tuesday 13 November 2018, Delft.

Recent Developments
LLUR
Landesamt für Landwirtschaft, Umwelt und ländliche Räume
Geologischer Dienst Schleswig-Holstein
• Double precision coordinates
AGS
Alberta Geological Survey
• Extended queries for boreholes
• Artificial Boreholes
• GEN files
16 november 2018

Double-Precision
Example in single precision(7 significant) numbers.
120000.0,440000.0
Such a coordinate means that a maximal accuracy of 0.1 can be
obtained. Smaller values of <0.1 meter cannot be projected
accurately.
16 november 2018

Double-Precision
Example (ETRS89/UTM) in single precision (7 significant) numbers.
590000.0,5659000
Such a coordinate means that a maximal accuracy of 1.0 can be
obtained. Smaller values of <1.0 meter cannot be projected
accurately.
Usage of double precision enlarges
the number of signifcant numbers to 15.
16 november 2018

Double-Precision
iMOD uses a “shadow” coordinate
system
iMODMap
0,01000000,5000000
dx=100,dy=1001000100,5000100
16 november 2018
0,0
dx,dy

Double-Precision
16 november 2018
Choice between single- and double precision
– iMOD converts IDF files between single-
and double precision. Besides the
coordinates, the data will be double precision
too (doubles the size of an IDF-file)
IDF Files
Notes:
• If ASCII-files are imported iMOD “sees” whether
the coordinates need to be in double-precision
• If IDF Calc is used, a single- or double-precision is
inherited from the first mentioned IDF-file

Double-Precision
16 november 2018
ISG Files Choice between single- and double precision –
iMOD converts ISG files between single- and
double precision. Besides the coordinates, the
data (coordinates, elevations, cross-sections) will
be double precision, also additional attribute time
added to data for future usage

Double-Precision
16 november 2018
iMODFLOW:
Choice between single- and double
precision
Running the model (runfile)

GEN-files
Current GEN-file
16 november 2018
1
245143,516806
245114,516811
245095,516796
245073,516776
245027,516753
245004,516739
244994,516730
244938,516700
244927,516697
244917,516698
244903,516692
244895,516687
244887,516673
244883,516665
244834,516632
244815,516595
END
END
id,province,capital
1,Drenthe,Assen
2,Flevoland,Lelystad
3,Schiermonnikoog,Schiermonnikoog
4,Ameland,Nes
5,'Het Rif',-
6,Terschelling,West-Terschelling
7,Friesland,Leeuwarden
8,Vlieland,Oost-Vlieland
9,Richel,-
11,Gelderland,Arnhem
12,Rottemerplaat,-
13,Rottemeroog,-
14,Zuiderstrand,-
15,Simonszand,-
Drawback
Very slow drawing
huge GEN-files

GEN-Files
ASCII and BINARY GEN-files both supported, however, for several
features in iMOD it is obliged to use the binary format. iMOD offers
the possibility to convert ASCII GEN-files into BINARY GEN-files.
16 november 2018
New BINARY format (*.GEN)
includes coordinates (double
precision) and attributes in a
single file.

GEN-files
New BINARY format (*.GEN) displays much-quicker and performances increases if zoomed in
16 november 2018
140MB

Resizable and movable scalebar (interactively)
Clipboard takes the selected area
bounded by the axes automatically
Movable axes
(interactively)
Extra’s

- Capable of sorting IDF files in the iMOD
Manager based upon keywords, in this
manner it is easy to sort a list as
TOP_L1.IDF, BOT_L1.IDF, TOP_L2.IDF,
BOT_2.IDF etc.
- Select files in the iMOD Manager via a
search string, this is handy to select
multiply files to be given a similar legend
Extra’s

Extra’s
Particle Tracking supports the
usage of IPF files (xyz) for
starting points
16 november 2018

Extra’s
Interactively Position 2D Layout of line for cross-section
16 november 2018

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16 november 2018

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DSD-INT 2018 iMOD version 4.3 double precision big coordinates - Vermeulen

1. Release v4.3 Peter Vermeulen

2. Recent Developments LLUR Landesamt für Landwirtschaft, Umwelt und ländliche Räume Geologischer Dienst Schleswig-Holstein • Double precision coordinates AGS Alberta Geological Survey • Extended queries for boreholes • Artificial Boreholes • GEN files 16 november 2018

3. Double-Precision Example in single precision(7 significant) numbers. 120000.0,440000.0 Such a coordinate means that a maximal accuracy of 0.1 can be obtained. Smaller values of <0.1 meter cannot be projected accurately. 16 november 2018

4. Double-Precision Example (ETRS89/UTM) in single precision (7 significant) numbers. 590000.0,5659000 Such a coordinate means that a maximal accuracy of 1.0 can be obtained. Smaller values of <1.0 meter cannot be projected accurately. Usage of double precision enlarges the number of signifcant numbers to 15. 16 november 2018

5. Double-Precision iMOD uses a “shadow” coordinate system iMODMap 0,01000000,5000000 dx=100,dy=1001000100,5000100 16 november 2018 0,0 dx,dy

6. Double-Precision 16 november 2018 Choice between single- and double precision – iMOD converts IDF files between single- and double precision. Besides the coordinates, the data will be double precision too (doubles the size of an IDF-file) IDF Files Notes: • If ASCII-files are imported iMOD “sees” whether the coordinates need to be in double-precision • If IDF Calc is used, a single- or double-precision is inherited from the first mentioned IDF-file

7. Double-Precision 16 november 2018 ISG Files Choice between single- and double precision – iMOD converts ISG files between single- and double precision. Besides the coordinates, the data (coordinates, elevations, cross-sections) will be double precision, also additional attribute time added to data for future usage

8. Double-Precision 16 november 2018 iMODFLOW: Choice between single- and double precision Running the model (runfile)

9. GEN-files Current GEN-file 16 november 2018 1 245143,516806 245114,516811 245095,516796 245073,516776 245027,516753 245004,516739 244994,516730 244938,516700 244927,516697 244917,516698 244903,516692 244895,516687 244887,516673 244883,516665 244834,516632 244815,516595 END END id,province,capital 1,Drenthe,Assen 2,Flevoland,Lelystad 3,Schiermonnikoog,Schiermonnikoog 4,Ameland,Nes 5,'Het Rif',- 6,Terschelling,West-Terschelling 7,Friesland,Leeuwarden 8,Vlieland,Oost-Vlieland 9,Richel,- 11,Gelderland,Arnhem 12,Rottemerplaat,- 13,Rottemeroog,- 14,Zuiderstrand,- 15,Simonszand,- Drawback Very slow drawing huge GEN-files

10. GEN-Files ASCII and BINARY GEN-files both supported, however, for several features in iMOD it is obliged to use the binary format. iMOD offers the possibility to convert ASCII GEN-files into BINARY GEN-files. 16 november 2018 New BINARY format (*.GEN) includes coordinates (double precision) and attributes in a single file.

11. GEN-files New BINARY format (*.GEN) displays much-quicker and performances increases if zoomed in 16 november 2018 140MB

12. Resizable and movable scalebar (interactively) Clipboard takes the selected area bounded by the axes automatically Movable axes (interactively) Extra’s

13. - Capable of sorting IDF files in the iMOD Manager based upon keywords, in this manner it is easy to sort a list as TOP_L1.IDF, BOT_L1.IDF, TOP_L2.IDF, BOT_2.IDF etc. - Select files in the iMOD Manager via a search string, this is handy to select multiply files to be given a similar legend Extra’s

14. Extra’s Particle Tracking supports the usage of IPF files (xyz) for starting points 16 november 2018

15. Extra’s Interactively Position 2D Layout of line for cross-section 16 november 2018

16. Extra’s Restored Pumping Tool 16 november 2018

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