[Qgis-user] Mapping landslides

[Bob and Deb]

Luckily the symbols I am interested in are point features.  I just
have to learn more about how to use inkscape.  It would be nice if
there was a way to create custom line styles by using a simple
language like "1.5mm line 0.75mm gap"  -Bob

On Fri, Feb 26, 2010 at 5:04 PM, Alex Mandel <tech_dev at wildintellect.com> wrote:
> Inkscape works fine for importing that pdf (And almost any pdf assuming
> it not a rasterized pdf) At most you'll need to select and group several
> pieces into a single object and save it.
>
> Most of these symbols are actually either very specific in size or are
> line and fill types. Converting to SVG will only help with point
> symbols. In the case of the symbols that are specific in size a png or
> other non scalable graphic might be better to match the rules, SVG
> should also work you'll just have always double check that you've got it
> scaled correctly.
>
> I know we were working on allowing user created lines and fills but I'm
> not sure how far we've come and know you'll need at least version 1.4 to
> start accessing that ability.
>
> Thanks,
> Alex
>
> On 02/26/2010 04:34 PM, Mike Toews wrote:
>> Hi Bob,
>>
>> Sure is possible. First, you need to make the icon into an SVG file.
>> If you have Adobe Illustrator, you can open the PDF you provided a
>> link to, isolate or copy the graphic and save it as SVG. Inkscape is
>> another good (free) tool, but it cannot open PDFs, so you will need to
>> trace the graphic.
>>
>> Once it is an SVG, just place the file into the QGIS svg directory
>> somewhere (e.g., C:\OSGeo4W\apps\qgis-unstable\svg), and it will be
>> available as a point symbol next time you open QGIS. The symbol size
>> can be based on a numeric attribute of the layer by setting Properties
>>> Symbology > Drawing by field > Area scale (the location of this
>> option depends on which version of QGIS, I'm using 1.4.0).
>>
>> -Mike
>>
>>
>> On 26 February 2010 10:31, Bob and Deb <bobdebm at gmail.com> wrote:
>>> Hello all,
>>>
>>> I am interested in mapping landslides using the symbols found here:
>>> http://ngmdb.usgs.gov/fgdc_gds/geolsymstd/fgdc-geolsym-sec17.pdf .
>>>
>>> Can I do this with qgis?  If I can do this in qgis, I would also like
>>> to have qgis scale some of these symbols so that they are proportional
>>> to the size and direction of the landslide.  How do I do that?
>>>
>>> Thanks in advance!
>>>
>>> Bob
>
>
>