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SRTM Visualisations

Started by Andrew W · · Last activity · 12 posts · 521 views

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General fitness, health and nutrition
Published
16 January 2004
Last activity
16 January 2004
Original author
Andrew W
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  1. I thought you might be interested in these visualizations I produced from
    the SRTM data :-

    trailgauge.co.ukmardaleview.png - A view from High St, looking down Rough Crag towards
    Mardale Head

    trailgauge.co.ukshiningtor.png - A view from Shining Tor towards Shutlingsloe (to
    the right).

    The data has only recently become available from the Shuttle Radar Topography Mission and has spot
    heights at roughly 90m intervals. I had to interpolate it and filter out a few voids. The voids
    appear as giant columns towering into the sky - I wonder if they were caused by aircraft getting
    in the way ?

    Tracing over a map, the interpolated heights pretty accurately resemble the OS contours and spot
    heights - the error is usually within 5m. If you want me to produce any more please let me know, it
    would be interesting to compare with a photograph if anyone has one. It would have to be on either
    the Dark Peak, White Peak or the Lakes Explorer maps as these are the only ones I have.

    Andrew

  2. Andrew W said:

    I thought you might be interested in these visualizations I produced from the SRTM data :-

    trailgauge.co.ukmardaleview.png - A view from High St, looking down Rough Crag towards
    Mardale Head

    trailgauge.co.ukshiningtor.png - A view from Shining Tor towards Shutlingsloe (to
    the right).

    The data has only recently become available from the Shuttle Radar Topography Mission and has spot
    heights at roughly 90m intervals. I had to interpolate it and filter out a few voids. The voids
    appear as giant columns towering into the sky - I wonder if they were caused by aircraft getting in
    the way ?

    Tracing over a map, the interpolated heights pretty accurately resemble the OS contours and spot
    heights - the error is usually within 5m. If you want me to produce any more please let me know, it
    would be interesting to compare with a photograph if anyone has one. It would have to be on either
    the Dark Peak, White Peak or the Lakes Explorer maps as these are the only ones I have.

    Andrew

    I just get a big white void that takes ages to download. I'm sure it's very good though!

    But what we really want is something that lets us rob OS maps etc. (without Mike knowing) from
    the web (-:

    --
    Paul My Lake District walking site (updated 29th September 2003): paulrooney.netfirms.compaulrooney.netfirms.com 122
    Wainwrights

    Please sponsor me for the London Marathon at: justgiving.comlondon2004

  3. Quoted message said:

    I just get a big white void that takes ages to download. I'm sure it's very good though!


    Do you have any image software that can view PNG's ? Try doing a 'save as' and then opening it in
    something other than IE. Can anyone else view them, if not I'll convert to JPG.

    Quoted message said:

    But what we really want is something that lets us rob OS maps etc. (without Mike knowing) from
    the web (-:

    I'm afraid I won't be doing another one.

  4. Andrew W said:


    Quoted message said:

    I just get a big white void that takes ages to download. I'm sure it's very good though!


    Do you have any image software that can view PNG's ?

    Yes. ACDSee.

    Quoted message said:

    Try doing a 'save as' and then opening it in something other than IE.

    No can do - it's greyed out.

    Quoted message said:

    Can anyone else view them,
    if not I'll convert to JPG.

    Quoted message said:

    But what we really want is something that lets us rob OS maps etc. (without Mike knowing) from
    the web (-:

    I'm afraid I won't be doing another one.

    That's a shame - it was a nice prog.

    --
    Paul My Lake District walking site (updated 29th September 2003): paulrooney.netfirms.compaulrooney.netfirms.com 122
    Wainwrights

    Please sponsor me for the London Marathon at: justgiving.comlondon2004

  5. Paul Rooney said:
    Andrew W said:


    Quoted message said:

    I just get a big white void that takes ages to download. I'm sure it's very good though!


    Do you have any image software that can view PNG's ?

    Yes. ACDSee.

    Quoted message said:

    Try doing a 'save as' and then opening it in something other than IE.

    No can do - it's greyed out.

    Quoted message said:

    Can anyone else view them, if not I'll convert to JPG.

    Quoted message said:

    But what we really want is something that lets us rob OS maps etc. (without Mike knowing) from
    the web (-:

    I'm afraid I won't be doing another one.

    That's a shame - it was a nice prog.

    They show up alright in Opera.

    --
    Don`t Worry, Be Happy

    Sandy
    --

    E-Mail:- [email hidden] Website:- ftscotland.co.ukftscotland.co.uk IRC:- Sandyb in #rabble
    uk3.arcnet.vapor.com Port:6667 #Rabble Channel Website:- ftscotland.co.ukrabbled
    ICQ : 41266150

  6. On Sun, 30 Nov 2003 20:17:20 GMT, "Sandy" <[email hidden]>

    Quoted message said:


    They show up alright in Opera.

    So they do! I never noticed that writing on Harter Fell before. Nice weather too!

    --
    Paul My Lake District walking site (updated 29th September 2003): paulrooney.netfirms.compaulrooney.netfirms.com 122
    Wainwrights

    Please sponsor me for the London Marathon at: justgiving.comlondon2004

  7. On Sun, 30 Nov 2003 20:17:20 GMT, "Sandy" <[email hidden]>

    Quoted message said:

    They show up alright in Opera.

    And Mozilla Firebird.

  8. In message <[email hidden]>, Andrew W <[email hidden]> writes

    Quoted message said:


    Quoted message said:

    I just get a big white void that takes ages to download. I'm sure it's very good though!


    Do you have any image software that can view PNG's ? Try doing a 'save as' and then opening it in
    something other than IE. Can anyone else view them, if not I'll convert to JPG.

    Quoted message said:

    But what we really want is something that lets us rob OS maps etc. (without Mike knowing) from
    the web (-:

    I'm afraid I won't be doing another one.


    Opened OK for me from IE. I'm quite impressed, what software was it?
    --
    Chris Morriss

  9. "Chris Morriss" <[email hidden]> wrote in message
    "]news:[email hidden]...

    Quoted message said:
    Quoted message said:


    Opened OK for me from IE. I'm quite impressed, what software was it?
    --

    Opened OK for me too, W2000/IE6

    Roy.

  10. Quoted message said:

    Opened OK for me from IE. I'm quite impressed, what software was it?

    I'm writing the software at the moment. I'll be in the next release of Trailgauge, my shareware
    mapping software. I'll try and post some screencams aswell, it looks most impressive as you fly-
    through or walk-through the terrain in realtime.

  11. Quoted message said:

    So they do! I never noticed that writing on Harter Fell before. Nice weather too!


    You should have seen the first attempt, Haweswater was half way up Harter Fell and Blea Water was on
    top of High St.

  12. As promised, I've produced an animation from the data and an aerial photo,
    here's the links :-

    trailgauge.co.uktg.avi

    trailgauge.co.ukgoyt.wmv

    The are both the same except for the format being different i.e. AVI and WMV. Try the AVI first as
    the quality suffered a bit on the conversion to WMV.

    Merry christmas all and I hope you all manage to get out into the hills over the holidays.

    Andrew

    "Andrew W" <[email hidden]> wrote in message "]news:[email hidden]...

    Quoted message said:

    I thought you might be interested in these visualizations I produced from the SRTM data :-

    trailgauge.co.ukmardaleview.png - A view from High St, looking down Rough Crag towards
    Mardale Head

    trailgauge.co.ukshiningtor.png - A view from Shining Tor


    towards

    Quoted message said:

    Shutlingsloe (to the right).

    The data has only recently become available from the Shuttle Radar Topography Mission and has spot
    heights at roughly 90m intervals. I had to interpolate it and filter out a few voids. The voids
    appear as giant


    columns

    Quoted message said:

    towering into the sky - I wonder if they were caused by aircraft getting


    in

    Quoted message said:

    the way ?

    Tracing over a map, the interpolated heights pretty accurately resemble


    the

    Quoted message said:

    OS contours and spot heights - the error is usually within 5m. If you want me to produce any more
    please let me know, it would be interesting to compare with a photograph if anyone has one. It
    would have to be on either the Dark Peak, White Peak or the Lakes Explorer maps as these are the
    only ones I have.

    Andrew

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