Sent from my LG phone Christine Schmidt <[email protected]> wrote:
>Hi Giovanni, > >thanks for your hints ! >Most of the mentioned methods I know more or less. >Important for the evaluation of an interpolation's reliability is a review >of the variogram and some statistical values. This should be also possible >in QGIS, as far as I could see until now - if not directly, then via R or a >GRASS plugin. > >This would be more than I have now in a proprietary groundwater database >management system with integrated interpolation functionality. That's why I >am looking for an alternative processing option. > >I am about to develop a subject for a master thesis in geoinformatics. First >of all I want to check what is present in the field in order to decide what >I can manage and contribute to proceed in this application field. > >tanto gracie e saluti, >Christine > > > > >-----Ursprüngliche Nachricht----- >Von: "G. Allegri" <[email protected]> >Gesendet: 26.05.2011 00:21:46 >An: "Christine Schmidt" <[email protected]> >Betreff: Re: Re: [Qgis-user] Processing of Groundwater Databases with QGIS > >>Spatial interpolation can be realized in many ways. There are lot >>different methods, which fit different needs. >> >> - Inverse Distance Weighting (IDW) >> - B-Splines >> - Kriging >> - Statistical simulations >> - etc. >> >>As you know, none of them is correct without a knowledge of the >>groundwater structure and stratygraphy. Anyway, in general, for this >>kind of elaborations, IDW and kriging are mostly used. >> >>AFAIK, QGis can do IDW [1], while the other methods will need external >>softwares like GRASS and R. In this case the related QGis plugins can >>be used. >> >>If you can give us more details on the kind of interpolation you nedd, >>we could give more advices. >>Giovanni >> >>[1] >>http://www.gistutor.com/quantum-gis/20-intermediate-quantum-gis-tutorials/51-inverse-distance-weighting-idw-interpolation-using-qgis.html >> >>2011/5/25 Christine Schmidt <[email protected]>: >>> Hi Bob, >>> thanks for the feed back. >>> Do you capture groundwater level data in boreholes and in monitoring >>> wells >>> with this plugin to store it in a database? Sounds interesting although I >>> wasn't searching exactly for that. >>> >>> Want to process data of existing groundwater databases with QGIS. >>> Processing >>> means precisely the interpolation of groundwater level data and >>> laboratory >>> analysis data for groundwater monitoring wells. >>> >>> I am checking what is already present in this field and what could >>> perhaps >>> be contributed for an efficient workflow. >>> >>> Regards, >>> Christine >>> >>> >>> >>> ________________________________ >>> Von: "Bob and Deb" <[email protected]> >>> Gesendet: 25.05.2011 18:31:57 >>> An: "Christine Schmidt" <[email protected]> >>> Betreff: Re: [Qgis-user] Processsing of Groundwater Databases with QGIS >>> >>> Hi Christine, >>> I've been working on a borehole data entry plugin. We are using it to >>> record historical high groundwater for use in liquefaction zone mapping. >>> >>> Are you looking for this kind of use cases? >>> >>> Regards, >>> Bob >>> >>> On May 25, 2011 9:03 AM, "Christine Schmidt" <[email protected]> >>> wrote: >>>> Dear QGIS community, >>>> >>>> would like to post my first question in this mailing list as follows: >>>> a.. Does anybody know something about a project or use case of >>>> processing >>>> groundwater databases with QGIS, exspecially in order to make >>>> interpolations >>>> of point data (well data) ? >>>> Got to know something similar in the context of GRASS >>>> (Carrera-Hernandez, >>>> 2007). But what about QGIS in this application field ? >>>> >>>> Thanks a lot for any feedback, >>>> warm regards, >>>> Christine >>> >>> >>> _______________________________________________ >>> Qgis-user mailing list >>> [email protected] >>> http://lists.osgeo.org/mailman/listinfo/qgis-user >>> >>> > > >___________________________________________________________ >Schon gehört? WEB.DE hat einen genialen Phishing-Filter in die >Toolbar eingebaut! http://produkte.web.de/go/toolbar > >_______________________________________________ >Qgis-user mailing list >[email protected] >http://lists.osgeo.org/mailman/listinfo/qgis-user
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