title: Convert svg to geojson fails with ogr2ogr
body: <p>I've downloaded an .svg map of Finland from <a href="http://www.amcharts.com/svg-maps/?map=finland" rel="nofollow">http://www.amcharts.com/svg-maps/?map=finland</a></p>
  
  <p>I want to convert it to topojson to use it with d3.js. I first start with svg to geojson conversion, but it fails.</p>
  
  <p>I tried:</p>
  
  <pre><code>ogr2ogr -f "GeoJSON" finland_kunta.json finlandHigh.svg 
  </code></pre>
  
  <p>The error I get: </p>
  
  <pre><code>FAILURE:
  Unable to open datasource `finlandHigh.svg' with the following drivers.
    -&gt; ESRI Shapefile
    -&gt; MapInfo File
    -&gt; UK .NTF
    -&gt; SDTS
    -&gt; TIGER
    -&gt; S57
    -&gt; DGN
    -&gt; VRT
    -&gt; REC
    -&gt; Memory
    -&gt; BNA
    -&gt; CSV
    -&gt; GML
    -&gt; GPX
    -&gt; KML
    -&gt; GeoJSON
    -&gt; GMT
    -&gt; GPKG
    -&gt; SQLite
    -&gt; WAsP
    -&gt; PCIDSK
    -&gt; OpenFileGDB
    -&gt; XPlane
    -&gt; AVCBin
    -&gt; AVCE00
    -&gt; DXF
    -&gt; Geoconcept
    -&gt; GeoRSS
    -&gt; GPSTrackMaker
    -&gt; VFK
    -&gt; PGDump
    -&gt; OSM
    -&gt; GPSBabel
    -&gt; SUA
    -&gt; OpenAir
    -&gt; PDS
    -&gt; WFS
    -&gt; HTF
    -&gt; AeronavFAA
    -&gt; EDIGEO
    -&gt; GFT
    -&gt; GME
    -&gt; SVG
    -&gt; CouchDB
    -&gt; Idrisi
    -&gt; ARCGEN
    -&gt; SEGUKOOA
    -&gt; SEGY
    -&gt; XLS
    -&gt; ODS
    -&gt; XLSX
    -&gt; ElasticSearch
    -&gt; PDF
    -&gt; CartoDB
    -&gt; SXF
  </code></pre>
  
  <p>I'm only starting to figure these tools out, so I'm not sure what exactly causes the error. When I open svg, it seems to look fine and have all the elements. </p>