10

Dropbox/Google Drive work on the principle that when a file gets modified, it will upload the file into the cloud. Then when your on your other machine, it will download the latest copy. This works great for small files. GIS data can often be large filesizes. If I edit one feature attribute in a layer that is 2GB big, there will be a lot of uploading/...


6

I guess you are a victim of the fact that spatially enabling a PostgreSQL db with PostGIS creates a bunch of functions in the "public" namespace. If you backup the public namespace and then restore it to a PostGIS db these functions will already exist, causing errors. As Paul Ramsey wrote (in a blog post explaining the issue in detail and giving advice): ...


3

You could also consider using GRASS-GIS to import and process your LiDAR data. There is detailed information provided on the GRASS Wiki and an example of a DEM created and visualised included below. In order to estimate the storage behind a dam, you might be able to use the GRASS GIS module r.lake. However, you may need to modify the program in order to ...


3

Since you are concerned about the user running the wrong mxd, I would suggest removing that mxd model parameter, and use Iterate Files option to run your model against each template mxd.


3

You can provide all necessary additional files (mxds) in a zip archive. To further protect them you can set password for such archive or compare checksums. In order to do it you need to create and use python script in your module. Just write script which will unzip your mxds to some temporary folder (you can pass this folder and zip file as an input ...


3

That is a bug. I have fixed it in 'raster' version 2.4-21.


2

Assuming you are going to be doing some very geospatially analysis on this data. You should seriously consider moving to a GIS focused DB solution such as PostGIS. With that focus the plugins and geoanalysis tools are extensive and will prevent you from rebuilding the wheel. Most, if not all of the analysis you will undoubtedly be doing on this data has ...


2

You have a LiDAR derived surface model and you want to calculate the volume of water that would be behind a theoretical dam? If so, have a look at this link http://www.bc-consult.com/tut/QGIS-volumes.php If the dam is already in place and filled with water and you want to calculate that volume of water-you will need to collect bathymetry data.


1

Postgresql supports functional indicies, so there is a way to combine 1&3 without that much performance sacrified http://www.postgresql.org/docs/9.1/static/indexes-expressional.html


1

I did this at a university, and we used a PostGIS database to store all our vector datasets. Additionally, we had vector footprints for all raster data, which we could load directly into QGIS via an Action. The rasters were stored in a cloud webservice. Initially we used Dropbox, which worked, but it was not optimal. Like @Micha stated, the size and amount ...


1

You can use NextGIS cloud (nextgis.com) for publishing your files. After publishing the file can be shared as: GeoJSON REST API WFS-T service And also you can create a numerous web maps using this shape file and different styles. Read the docs or watch the videos about nextgis.com features.


1

Concerning the hardware part: In our GIS cluster (http://gis.cri.fmach.it/cluster/) we have recently added 96TB based on low end consumer hardware, obviously selecting carefully the disks. The file system system is based on the open source storage software glusterFS which enables us to add new storage in future easily ("GlusterFS is an open source, ...


1

See the answers to Managing large amounts of geospatial data? version control is a huge issue, metadata should play a big role. I think the stock/obvious answer would be to use a spatial database (PostGIS, Oracle, SDE, MSSQL Spatial, etc) in conjunction with a metadata server such as esri's GeoPortal or the open source GeoNetwork application, and overall I ...


1

I use both GDrive and Dropbox for syncing non-gis data. I suspect their architechture is similar, certainly the dialog for desktop file sync is very similar. I have only used Dropbox for syncing between two machines on the same account and shape files. I suspect errors, mostly from the use of two machines on the same account. Malevolance from file ...


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