| 查看: 2935 | 回复: 13 | ||
| 当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖 | ||
hdzw2012木虫 (正式写手)
|
[求助]
求助帮下载这里的地形数据：http://www.ngdc.noaa.gov/mgg/fliers/globedem.html 已有1人参与
|
|
|
求帮下载这里的地形数据：http://www.ngdc.noaa.gov/mgg/fliers/globedem.html 如果有其他的同样规格的数据也可提供。 We use three terrain models which are obtained from the SRTM ftp site [16]. All models represent a real-world terrain and all of them have a grid sampling interval of 5 meters. [16] Global Land One-km Base Elevation. Retrieved December, 2007, http://www.ngdc.noaa.gov/mgg/fliers/globedem.html. The first terrain model is named Smooth since it has fewer obstacles and is smoother when compared to the other two models. The data for this model was taken from the surroundings of Encanto Golf Park, near Phoenix, USA. This terrain model was extracted from inside of a virtual rectangle formed by two points whose global coordinates are (33°28'44.27" N, 112°05'25.86"W) and (33°28'25.08" N, 112°05'05.01" W). The screenshot of this terrain model is given in figure 6. The second terrain model is named Wavy, this model is more uneven when compared to the previous one and as its name suggests. The model was extracted from inside of a virtual rectangle formed by two points whose global coordinates are (37°06'44.48" N, 30°25'14.11" W) and (37°10'41.32" N, 30°33'14.09" W). The location was chosen from Antalya, Turkey.The terrain looks like as shown in Figure 7. The last terrain Rough, is also extracted from a region nearby Encanto Park, Phoenix and is shown in Figure 8. Terrain models are square-shaped and there are 201 points on the x-axis and 201 on the y-axis. The distance between consecutive two points is equal to 5 meters which means that all of the terrain models have dimensions of 1 km × 1 km. [16] Global Land One-km Base Elevation. Retrieved December, 2007, http://www.ngdc.noaa.gov/mgg/fliers/globedem.html.  6.png  7.png  8.png [ Last edited by hdzw2012 on 2014-10-2 at 21:42 ] |
回复此楼» 猜你喜欢
汕头大学 - 海洋地质学 - 资源与环境 - 少量调剂名额，4月14日16点前
已经有1人回复
-
连续4年申请青基，最后一年仍未中，难受，求大家帮忙分析专家意见
已经有64人回复
-
地质学论文润色/翻译怎么收费?
已经有51人回复
-
投稿求助
已经有7人回复
-
城乡规划学招收调剂 1名
已经有1人回复
-
【招聘】科研助理+五险一金
已经有868人回复
-
招聘博士研究生
已经有45人回复
hdzw2012
木虫 (正式写手)
- 应助: 0 (幼儿园)
- 金币: 5050
- 散金: 37
- 帖子: 534
- 在线: 702.8小时
- 虫号: 2399169
- 注册: 2013-04-03
- 性别: GG
- 专业: 计算机应用技术
4楼2014-10-03 08:38:24
【答案】应助回帖
★
感谢参与，应助指数 +1
hdzw2012: 金币+1 2014-10-03 07:03:51
感谢参与，应助指数 +1
hdzw2012: 金币+1 2014-10-03 07:03:51
|
Why do you want to use HyDROSheds (90m, 500m and 1km)? http://hydrosheds.cr.usgs.gov/index.php HydroSHEDS (Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales) HydroSHEDS is a mapping product that provides hydrographic information for regional and global-scale applications in a consistent format. It offers a suite of geo-referenced data sets (vector and raster) at various scales, including river networks, watershed boundaries, drainage directions, and flow accumulations. HydroSHEDS is based on high-resolution elevation data obtained during a Space Shuttle flight for NASA's Shuttle Radar Topography Mission (SRTM). |
2楼2014-10-02 23:48:35
缔造神话2011
新虫 (小有名气)
- 应助: 23 (小学生)
- 金币: 1653.4
- 红花: 1
- 帖子: 89
- 在线: 21.7小时
- 虫号: 2262951
- 注册: 2013-01-27
- 专业: 地理信息系统
3楼2014-10-03 06:53:39
5楼2014-10-05 05:30:42
30