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| Subject: | Re: [gislist] Newbie needs advice on GIS data formats |
| Date: |
11/01/2005 03:00:02 PM |
| From: |
Sree Rama Murthy D |
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I go with the option of comma separated/delimited file. Right now you store
the lat/long of your survey and can later bring this into any GIS software.
Many of the latest GIS softwares have the option of importing a text file.
You can also generate the path/route of your survey depending on the
frequency of points collected. That is, you can generate a route using many
utilities like AutoLISP or MDL.
Use this route to overlay on a image or base map and locate the points of
interest (whale occurence, whale/vessel interactions).
-Sreeram.
On 10/29/05, Bill Thoen <bthoen@gisnet.com> wrote:
>
> Probably the best format you could use for these point-oriented data is a
> simple comma delimited text file. This can be read by all GIS software as
> well as all database and spreadsheet software. In short, everyone could
> use
> this format. And since you don't yet know what GIS you're going to use it
> seems premature to pick a fixed data format yet.
>
> However, if you want a GIS format, the MapInfo Interchange Format (MIF) is
> documented here: http://www.directionsmag.com/mapinfo-l/mif/AppJ.pdf. The
> other (more popular) data format is ESRI Shape and the URLs for its
> documentation have just been posted in this list recently. Perhaps someone
> who knows where the gislist archives are can supply that one to you too.
>
> - Bill Thoen
>
>
> On Sat, Oct 29, 2005 at 03:42:55PM +1000, Bill Fulton wrote:
> > Dear GIS wizards
> >
> > Our small volunteer group researches whale behaviour. We cruise along
> with a
> > group of whales, recording every now and then, on a Pocket PC, the
> position
> > of the whales (lat/long), position of influencing factors like
> commercial
> > whalewatch boat, and environmental conditions like water depth,
> temperature
> > and weather, and whale behaviour. All this is put into a data file (in
> an
> > XML format actually, but that's neither here nor there).
> >
> > What would be nice would be if I wrote a data conversion program to
> convert
> > this data to some standard- format GIS file. Then the new file could be
> fed
> > into a GIS program to draw maps of coastline or seabed, with
> superimposed
> > whale and boat tracks, maybe showing points of interest like where
> > whale/vessel interactions occurred.
> >
> > We can't afford to buy a proper commercial GIS program unfortunately,
> but a
> > shareware GIS program would be within our budget.
> >
> > I need some advice on what would be a good choice of GIS data format.
> > Obviously to be able to write the data conversion program, I will need
> to be
> > able to find out the exact details of the internal format of the GIS
> data
> > file -- a specification of the format would be fairly essential. It also
> > would be good if the chosen GIS format is not the most devilishly
> > complicated one, so the programming task will be simpler. Finally, of
> > course, it needs to be a GIS format that a good GIS shareware program
> will
> > support.
> >
> > So -- would appreciate any advice on a good choice of GIS file format,
> > where to find information on what the exact internal file format is, and
> > advice on good shareware GIS programs. I have Googled an awful lot but
> did
> > not have much joy. Thanks so much.
> >
> > -- Bill (Sydney Australia)
> >
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--
Regards,
Sreeram.
9866656920 (M).
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