[Qgis-user] Mapping landslides

[Bob and Deb]

Hi Marco,

I happen to have 1.5 but didn't know it had this functionality.  I
just tried it and it works great!  What are the units of the number?
mm?  Would I be able to do something like the attached pic?

Thanks for your help!

Bob




On Sun, Feb 28, 2010 at 3:07 AM, Marco Hugentobler <marco at hugis.net> wrote:
> Hi Bob
>
>>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"
>
> It is possible to use custom line-gap linestyles using the current development
> version (or wait for 1.5). In the vector properties dialog, go to the
> symbology tab, click the 'new symbology' button. Then go to 'properties' and
> check the combo box 'use custom dash pattern'. Select cap style 'Flat' and
> klick 'change' to insert your custom pattern.
>
> Regards,
> Marco
>
> Am Sonntag, 28. Februar 2010 08.21:07 schrieb 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
>>
>> _______________________________________________
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>>
>
> --
> Dr. Marco Hugentobler
> HUGIS - GIS programming and consulting
> Webereistr. 66
> CH-8134 Adliswil
> marco at hugis.net
> http://homepage.hispeed.ch/hugis/
> Technical Advisor QGIS Project Steering Committee
>
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