db9_ITPs =================================================== Competent Seabed Interpolator version 'S'.0 =================================================== Checklist for running CSI Item Detail Name The Program Windows 95/2000/XP executable a.exe Proximity grid Generated in ArcView or ArcGIS Spatial Analyst; ASCII format xxx_PRX.tmp Input dataset dbSEABED ASCII table xxx_WWD.txt Setup file Text table with switches for the interpolation parameters and controls xxx_ITP.txt Bathymetry ETOPO2 Obtain the file from this LINK Folders Expected by the software C:/dbSEABED/_db9/_Interp; C:/dbSEABED/_db9/_Bathy LINK= "http://instaar.colorado.edu/~jenkinsc/dbseabed/resources/bathy/ETOPO2.dab.zip" Aim i. To produce best possible interpolated griddings of seabed bottom type data. ii. Combine that with the capability to make grids very efficiently from tabulated data including dbSEABED iii. produce griddings that have the maximum utility for downstream users. Legal status i. The software is research grade code. No warranty is given as to it's fitness for any purpose. ii The code is released under GNU Public Licence, which means that the code is public and open, and available to others to use and improve. ("www.gnu.org/copyleft/gnu.html") iii. Release of the code was requested by the Office of Naval Research (ONR) Coastal Geosciences group. Technical status i. The code has been validated in function by numerous tests on data from the Adriatic Sea, Gulf of Mexico, NW Australia. ii. Under g95 strict the sole reported errors are: a. "Variable ... is set but never used" b. "Implicit conversion ... may cause precision loss" c. "Variable ... is never set and never used". These bugs will be fixed in future versions. iii. Documentation is partial. It will be improved in future versions. iv. All input coordinates must be in decimal degrees, as is the output. Content of the download i. This readme file - readme.txt ii. Windows (95/2000/XP) and DOS executable - a.exe iii. The run command file used at INSTAAR - g95_ITPs.bat iv. The Fortran (MS Fortran5 then g95) code in text - db9_ITPs.txt and *.for v. Template run setup files - PPP_ITP.set and *.doc v. Template point data input files - PPP_WWD.txt and *.xls Run instructions i. Ensure that a copy of this file (333Mb) is at C:\dbSEABED\_db9\_Bathy\_Etopo2\ETOPO2.dab. Obtain the file from http://instaar.colorado.edu/~jenkinsc/dbseabed/resources/bathy/ETOPO2.dab.zip ii. Create directories: a. working c:\dbSEABED\_db9\_Interp\ b. project - c:\dbSEABED\_db9\_Interp\PPP ('PPP' will be a manual input to the program) ii. Prepare the coastal proximity grid, which is also a template for output grid extent and resolution a. Obtain a land area polygon shapefile b. In ArcView or ArcGIS create a box extent polygon shapefile and convert it to a grid at your chosen resolution. c. Create a proximity to land grid of the same extent/resolution from the land polygon coverage. d. Export that grid to an ESRI (Spatial Analyst) ASCII grid format and name it c:\dbSEABED\_db9\_Interp\PRJ. iii. Edit the Run setup file PPP_ITP.set iv. Prepare the input point data, referring to the templates xxx_WWD.txt and xxx_WWD.xls. Although dbSEABED output data is the usual feed, you can 'dummy up' other data to conform by following these templates the file must have a latitude, longitude, water depth, sample top and sample base for each data point. The file must be called ***_wwd.txt (WithWaterDepths). iv. Run the program either using db9_ITPs.bat (compiles) or a.exe (simple executable). Answer 2 prompts, including the second with the column number of the point data attribute (XXX) to be processed. The program fails if the input point data is not strict. v. Runtime is 6 minutes on 3,600 points and 100,000 gridcells. An initial stage of no reaction is the passing over of no-data regions. Grid cell count is the major control on runtime. Runtime is shorter when the display screen is minimzed. v. Output files: PPP_XXX_.asc - output values as ESRI Spatial Analyst grid PPP_XXXu.asc - uncertainties on the attribute values PPP_XXX_.txt - point data of same PPP_XXXd.txt - direct access summary file of the data points PPP_XXXc.txt - point data set aside for a holdback calibration PPP_XXXa.txt - (audit) diagnostics file Project specific files: PPP_ITPb.asc - bathymetry as ESRI Spatial Analyst grid and Temporary files: _datMTRX.tmp, _iXdata.tmp, _xxx_PRX.tmp, _ iXgrid.tmp, _iXlink.tmp. Support chris.jenkins@colorado.edu http://instaar.colorado.edu/~jenkinsc/dbseabed/resources/interp/ Download Zipfile http://instaar.colorado.edu/~jenkinsc/dbseabed/resources/interp/db9_ITPs_code.zip =================================================== 10 October 2007 INSTAAR, Boulder CO