Auto Landscape gha - Grasshopper2024-03-28T08:48:53Zhttps://www.grasshopper3d.com/forum/topics/auto-landscape-gha?commentId=2985220%3AComment%3A1230927&feed=yes&xn_auth=noVery cool, thanks! You made i…tag:www.grasshopper3d.com,2015-02-24:2985220:Comment:12306602015-02-24T12:54:20.859ZJoris Hoogeboomhttps://www.grasshopper3d.com/profile/JorisHoogeboom
<p>Very cool, thanks! You made it because it was useful for you one time, but not anymore? Just wondering why this faded out a little bit.</p>
<p>I am mainly interested how you are doing the XY-geo coord conversion and how you batch the google requests. But it seems no batching occurs? I'm asking because it seems to be a very limiting factor in the elevation API, the resolution decreases with the number of points per request, but the number of requests per 24-h is very limited. Trying to…</p>
<p>Very cool, thanks! You made it because it was useful for you one time, but not anymore? Just wondering why this faded out a little bit.</p>
<p>I am mainly interested how you are doing the XY-geo coord conversion and how you batch the google requests. But it seems no batching occurs? I'm asking because it seems to be a very limiting factor in the elevation API, the resolution decreases with the number of points per request, but the number of requests per 24-h is very limited. Trying to maximize the resolution I can get for an area by batching the points.</p> Hi Joris,
Sorry for the late…tag:www.grasshopper3d.com,2015-02-24:2985220:Comment:12309272015-02-24T11:26:51.949ZXiaoming Yanghttps://www.grasshopper3d.com/profile/Xiaoming
<p>Hi Joris,</p>
<p></p>
<p>Sorry for the late reply. I have not use it for a long time. I diged out the code as replied below.</p>
<p></p>
<p>Xiaoming</p>
<p>Hi Joris,</p>
<p></p>
<p>Sorry for the late reply. I have not use it for a long time. I diged out the code as replied below.</p>
<p></p>
<p>Xiaoming</p> Source code attached.tag:www.grasshopper3d.com,2015-02-24:2985220:Comment:12308422015-02-24T11:25:33.194ZXiaoming Yanghttps://www.grasshopper3d.com/profile/Xiaoming
<p>Source code attached.</p>
<p>Source code attached.</p> Very useful component, any am…tag:www.grasshopper3d.com,2015-02-18:2985220:Comment:12268252015-02-18T11:03:52.203ZJoris Hoogeboomhttps://www.grasshopper3d.com/profile/JorisHoogeboom
<p>Very useful component, any ambition in open-sourcing this?</p>
<p>Very useful component, any ambition in open-sourcing this?</p> Thanks, this is immensely use…tag:www.grasshopper3d.com,2012-02-17:2985220:Comment:5390562012-02-17T14:19:41.438ZChinghttps://www.grasshopper3d.com/profile/Ching
<p>Thanks, this is immensely useful.</p>
<p>Edit: The data from Google and NASA have bigger differences than I thought, interesting.</p>
<p>Thanks, this is immensely useful.</p>
<p>Edit: The data from Google and NASA have bigger differences than I thought, interesting.</p> http://www.grasshopper3d.com/…tag:www.grasshopper3d.com,2012-02-17:2985220:Comment:5392512012-02-17T13:34:59.757ZLuis Fraguadahttps://www.grasshopper3d.com/profile/LuisFraguada
<a href="http://www.grasshopper3d.com/group/elk/forum/topics/comparison-between-google-elevations-api-and-srtm3-data" target="_blank">http://www.grasshopper3d.com/group/elk/forum/topics/comparison-between-google-elevations-api-and-srtm3-data</a><br />
<br />
Check out this comparison I did with the available datasets accessible through a web API.
<a href="http://www.grasshopper3d.com/group/elk/forum/topics/comparison-between-google-elevations-api-and-srtm3-data" target="_blank">http://www.grasshopper3d.com/group/elk/forum/topics/comparison-between-google-elevations-api-and-srtm3-data</a><br />
<br />
Check out this comparison I did with the available datasets accessible through a web API. Actually there is another plu…tag:www.grasshopper3d.com,2012-02-17:2985220:Comment:5391352012-02-17T12:02:29.038ZChinghttps://www.grasshopper3d.com/profile/Ching
<p>Actually there is another plug-in called Elk (<a href="http://www.food4rhino.com/project/elk" rel="nofollow" target="_blank">here</a>) which has the ability to generate topography over a much bigger area with data from NASA, but the resolution might not be as high or as accurate as google's data (please correct if I'm wrong):</p>
<p><em>"SRTM1 data is sampled at one arcsecond (about 30 meters) and SRTM3 data is sampled at three arcseconds (about 90 meters). The higher resolution SRTM1 data…</em></p>
<p>Actually there is another plug-in called Elk (<a rel="nofollow" href="http://www.food4rhino.com/project/elk" target="_blank">here</a>) which has the ability to generate topography over a much bigger area with data from NASA, but the resolution might not be as high or as accurate as google's data (please correct if I'm wrong):</p>
<p><em>"SRTM1 data is sampled at one arcsecond (about 30 meters) and SRTM3 data is sampled at three arcseconds (about 90 meters). The higher resolution SRTM1 data is available for most of the US and the lower res SRTM3 data is available for most of the world.</em>"</p>
<p>The 3x3 stitching definition above is done in Rhino 4 but it doesn't actually "stitch together" or merge the surfaces into one. I had to do it manually in Rhino with the merge surfaces command. Which I think does a better job than grasshopper.</p>
<p>Also I think the calculations within it (distance of one degree change in lat/lng) won't be accurate enough (or high enough in resolution) even though they <em>are</em> correct so I cannot guarantee the 3x3 pieces are perfectly neighbouring sets of data (they might contain very very tiny strips of overlapped/missed topography data). However this error is really insignificant next to the limited resolution of the generated topography so it is neglectable if you're not a perfectionist like me.</p>
<p></p>
<p>Edit: For bigger areas Elk is much easier, but for smaller areas where you want to specify the area size Xiaoming's component is more convenient I think.</p> Thank you for this- I am real…tag:www.grasshopper3d.com,2012-02-17:2985220:Comment:5389952012-02-17T10:18:27.907ZMatthew Owenshttps://www.grasshopper3d.com/profile/MatthewOwens
<p>Thank you for this- I am really having fun with it.</p>
<p> </p>
<p>Any plans to connect additional databases? Google Earth is nice for Architects, but having geological surveys would be much better for Engineers.</p>
<p> </p>
<p>Also, having the ability to generate stitched topographies within the component would be amazing. I guess you are using Rhino 5 (which I do not have) for the stitching definition? I look forward to future improvements.</p>
<p> </p>
<p>Thank you again!!!!</p>
<p>Thank you for this- I am really having fun with it.</p>
<p> </p>
<p>Any plans to connect additional databases? Google Earth is nice for Architects, but having geological surveys would be much better for Engineers.</p>
<p> </p>
<p>Also, having the ability to generate stitched topographies within the component would be amazing. I guess you are using Rhino 5 (which I do not have) for the stitching definition? I look forward to future improvements.</p>
<p> </p>
<p>Thank you again!!!!</p> Hi Ching,
I am very glad you…tag:www.grasshopper3d.com,2012-02-14:2985220:Comment:5369912012-02-14T12:54:07.900ZXiaoming Yanghttps://www.grasshopper3d.com/profile/Xiaoming
<p>Hi Ching,</p>
<p>I am very glad you like the component. For the unit, actually I mentioned in the post that the area is in m2, but I guess it is confusing...Thank you for the advise, I should make it more clear.</p>
<p>The file you posted below it great, model large area is possible and easy now. Thank you!</p>
<p>Regards,</p>
<p>Xiaoming</p>
<p></p>
<p>Hi Ching,</p>
<p>I am very glad you like the component. For the unit, actually I mentioned in the post that the area is in m2, but I guess it is confusing...Thank you for the advise, I should make it more clear.</p>
<p>The file you posted below it great, model large area is possible and easy now. Thank you!</p>
<p>Regards,</p>
<p>Xiaoming</p>
<p></p> Finally got it working after…tag:www.grasshopper3d.com,2012-02-10:2985220:Comment:5338842012-02-10T05:13:00.893ZChinghttps://www.grasshopper3d.com/profile/Ching
<p>Finally got it working after playing around with the maths I am most afraid of. This is a 3 by 3 definition in which you just need to input the cooordinates for the centre. Not sure how to stitch the result landscape pieces together though, I think they might not be perfectly aligned. Any improvements welcome.…</p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2768708789?profile=original" target="_self"><img class="align-full" src="http://storage.ning.com/topology/rest/1.0/file/get/2768708789?profile=RESIZE_1024x1024" width="721"></img></a></p>
<p>Finally got it working after playing around with the maths I am most afraid of. This is a 3 by 3 definition in which you just need to input the cooordinates for the centre. Not sure how to stitch the result landscape pieces together though, I think they might not be perfectly aligned. Any improvements welcome.</p>
<p><a target="_self" href="http://storage.ning.com/topology/rest/1.0/file/get/2768708789?profile=original"><img width="721" class="align-full" src="http://storage.ning.com/topology/rest/1.0/file/get/2768708789?profile=RESIZE_1024x1024" width="721"/></a></p>