[Qgis-user] Geophysical Processing

[John Harrop]

Grant and Lester,

I do primarily geochemistry for processing and display in QGIS, but occasionally I do a little physical chemistry - aka geophysics ;-)

I’ve been really liking working in R with all the support in there for visualization, EDA and modelling.  For some purposes it could be another open option worth considering.  There is also quite a lot of spatial support in R which doesn’t hurt.  Another aspect that has been attractive with R is maintaining a "reproducible research” approach to how I do interpretation now.  Having the scripts used to pull, filter, summarize, process and visualize is very useful for both the next project or the next time I’m back on the same project.  Graphics in R is excellent - that was the most compelling attraction for me to start using R years ago now.

Regards,


John Harrop
VP Exploration
International Lithium Corp

> On Feb 2, 2016, at 10:30 PM, Lester Anderson <arctica1963 at gmail.com> wrote:
> 
> Hi Grant,
> 
> As a potential fields geophysicist myself, I often do all my
> processing using GMT or Mirone,both of which can be used to compute
> derivatives via grdfft, including directional and differential RTP
> (for your mag). GMT can work with a number of data formats but
> primarily netCDF; Mirone has a few more import options for grids.
> 
> Getting grids into QGIS is either via GeoTIFF or using a grid format
> that works between GMT and QGIS, which is for 2.10 at least, the older
> "classic" GMT grid format.
> 
> I would certainly suggest working with GMT ( http://gmt.soest.hawaii.edu/ ).
> 
> Lester
> 
> On 3 February 2016 at 02:38, Grant Boxer <boxerg at iinet.net.au> wrote:
>> I have a total magnetic intensity image and would like to create a first
>> vertical derivative of the image. I have found the hillshade, slope and
>> aspect operations and wondered what is the best to use as 1VD process?
>> 
>> 
>> 
>> Grant Boxer
>> 
>> Consultant Geologist (FAIG R.P. Geo)
>> 
>> Perth, Western Australia
>> 
>> 
>> 
>> 
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