Finding Height Maps on the Web

  • Mt Taranaki height map - 15m DEM from Koordinates
    Mt Taranaki height map - 15m DEM from Koordinates 

This tutorial provides height maps, links to them, and talks about what to look for. It is written from the point of view of someone wanting to use them for modelling terrain in Blender, but it is relevant to modelling with other 3d packages.

Ready to go New Zealand height maps

I've converted a few height maps into the .png format. On the thumbnails below click to enlarge, then Right click >> Save Image As.

Auckland - 15m DEM from Koordinates  Lake Taupo - 15m DEM from Koordinates  Mangawhai Harbour - 10m DEM from Koordinates  Mt Taranaki height map - 15m DEM from Koordinates  Mt Tarawera and surrounding lakes - 15m DEM from Koordinates  Rangitoto and Motutapu Islands - 15m DEM from Koordinates  Sounds at the northern tip of the South Island - 15m DEM from Koordinates  Stewart Island - 25m DEM from Landcare Research  Wellington - 15m DEM from Koordinates - Medium Quality

And here's a, high resolution, 1m DEM of Wellington East, try subdividing it 600 times. There are details in it that you won't see in the height maps above. You can see the cutting where the road goes through the hills into the Mirimar peninsula, the plateau formed by the airport, the wharves, the roads around the coast.

New Zealand height map sources

The height maps above come from two sources, Koordinates and Landcare Research. They have maps of all of New Zealand in GeoTIFF and ASCII formats, which can be opened with QGIS. These websites know height maps as Data Elevation Models (DEMs). You can download several maps at once, you can also crop an area of interest which saves on download time. Both websites allow you to choose the map projection. Just accept the default.

World height maps from USGS

World height maps from NASA

There are height maps for other parts of the Earth. NASA has released data from it's Shuttle Radar Topography Mission (SRTM) in a variety of formats. Here are some useful links:-

  • Read about NASA's SRTM
  • Download .hgt files from NASA (these can be opened by QGIS)
  • Terms & Conditions - My understanding is that you may use the SRTM .hgt files without restriction, please correct me if I'm wrong.
  • Governments and councils of many countries have height maps that you can download for free, it's just a matter of looking, or asking.

World height maps from NASA - improved by Jonathan de Ferranti

Jonathan de Ferranti has spent a lot of time improving DEMs from SRTM and other sources. He has his improved DEMs available from Viewfinder Panoramas.

Height map file formats

All height maps files are an array of numbers. The numbers are sometimes shown as colours.

               0 0 1 1
              0 0 2 2
              4 3 3 4
              0 0 0 0

What makes the formats different from each other is the range of numbers and the metadata. And what software you need to handle them. Blender requires an image format such as .png or .jpg. For other formats you will need QGIS to convert them. These other formats have metadata which says:-

  • how wide the map is
  • what scale was used
  • the projection method
  • the unit of measurement, metres or feet
  • the position of the map

The metadata makes it easy to join maps together. This is important because the maps are often broken up into tiles. New Zealand, which is a small island country, has a DEM that is 1.7 gigabytes in size. The DEM is accurate to 25 metres. Such a file can slow down a computer markedly. A 1 metre DEM of Wellington, NZ's capital, is .6 gigabytes in size, imagine how big the file of a continental country would be! But don't worry, in a couple of weeks the price of RAM will come down and this issue will go away :). In the mean time, tiles are good. QGIS is your friend for these special file formats. QGIS is free. In the next tutorial, Getting height Maps from QGIS, I will show you how to use it to convert DEMs into a usable format.



red timberland bootsburberry outlettoms outletcanada goosetimberland earthkeeperskobe shoesp90xTory Burch Flatstory burch flatsjordan 4uggs outlettimberland outletburberry scarfugg outlet onlinechanel online shopjordans for saleugg bootstrue religionray ban sunglasscoach black fridaylouis vuittoncoach factory outletoakley sunglasses wholesaleugg boots outletchristian louboutin saleconcord 11uggs on saleugg bootscoach outlettimberland uktoms canadaugg bootsmichael korstimberland bootsburberry handbagsburberry scarfferragamo outlet onlineuggs on saleabercrombielouis vuittonjordan 11hollister clothingcanada goose outlettimberland outletray ban sunglassescheap uggsgucci shoesralph lauren outletTory Burch Outlettods outletgucci handbagsmont blanclebron james shoesinsanity workoutburberry handbagstrue religion outlettory burch outletmulberry ukmichael kors handbagsmonclercoach outlet store onlineoakley sunglasses wholesalecheap uggschristian louboutin salehollister coburberry outlet onlineconcords 11abercrombie & fitch new yorkcoach factory outletrayban sunglassescoach factory store onlinethe north faceabercrombie fitchblack timberland bootsburberry bagschristian louboutin outletburberry saleuggs for mencoach factory onlinecanada goose outletlv outletcoach factoryburberry saleralph lauren outletretro jordansair jordansmichael kors outlet onlinecoach outlet store onlinecanada goose outletburberry salecoach factory outletchi flat ironconcord 11marc jacobs outletoakley sunglassesgucci beltsmichael kors outlettimberlandstimberlandslouis vuitton outlettods outlet storefitflop saletimberland boat shoescheap tomsbeats solonike air maxburberry bagsugg salecopy watchesthe north face saleblack timberland bootscanada goose outletugg bootsgucci handbagsair jordan 11burberry outlet onlinered christian louboutintory burch handbagstory burch handbagsnorth face backpackmont blanc pensgucci outletjordan 11 lowTory Burch Shoescanada goose jackethermes outletlululemon saleugg bootswww.louisvuitton.comuggs for mencheap uggsabercrombie & fitchfitchchanel outlethollisterburberry outletabercrombie kidsthe north facechanel handbagslouboutincoach outletwhite timberland bootschristian louboutinugg australiatimberland outletray ban outletmichael kors outletgucci shoesmoncler outletcanada goose jacketskate spadepolo outletcoach factory outletadidas shoescanada goose jacketsretro 11canada goose salejordan 3ray ban outletburberry handbagslouis vuittonlouis vuitton outletlouis vuitton outlettoms shoesoakley sunglassesburberry handbagsjordan 13jordan 11 snakeskinadida srunning shoeslouis vuitton outletcoach black fridayfake watchescoach outletjordan 6hollister clothing storeburberry handbagsjuicy couture suitstory burch outlet onlineuggs for mencoach factory outletcheap uggslouis vuitton handbagstrue religion outletcheap nfl jerseystoms wedgesmichael kors outlet onlinejordan 11 gamma blueabercrombie outletcoach cyber mondaymont blanc legendcyber mondaykobe bryant shoestods saletory burch shoescoach factory onlinelouis vuitton outletchristian louboutinversacemichael kors uktory burch shoesgivenchy outlet online

Maulana Heidi

Thanks.... this site is very important for me. I don't want this site to be closed. :) Walaupun saya gk baca saya suka bgt. Para pecinta otomotif juga sangat suka mencari informasi Harga Mobil Honda Jazz. Kali ini kami memberitakan tentang peluncuran mobil tercepat di dunia 2014. Semua satu paket. Harga mobil honda jazz finding-height-maps-web

Add new comment