y*********d 发帖数: 1013 | 1 【 以下文字转载自 GeoSpace 讨论区 】
发信人: yellowchild (yellowchild), 信区: GeoSpace
标 题: 如何在ENVI里面用SHAPEFILE做MASK?
发信站: BBS 未名空间站 (Thu Apr 1 17:27:32 2010, 美东)
我的BOUNDARY文件是从SHAPEFILE文件转的RASTER文件,用这个RASTER文件做MASK去
RESIZE LANDSAT IMAGE,可是位置对不上,两个文件在ENVI里面可以LINKED,所以说明
是在一个IMAGE里面,但BOUNDARY应该位于IMAGE的右半部分,但现在在左半部分,有什
么方法可以移动吗,让BOUNDARY MASK在对的地方?
不知道自己说清楚了没,谢谢大家了.... |
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y*********d 发帖数: 1013 | 2 【 以下文字转载自 GeoSpace 讨论区 】
发信人: yellowchild (yellowchild), 信区: GeoSpace
标 题: 如何在ENVI里面用SHAPEFILE做MASK?
发信站: BBS 未名空间站 (Thu Apr 1 17:27:32 2010, 美东)
我的BOUNDARY文件是从SHAPEFILE文件转的RASTER文件,用这个RASTER文件做MASK去
RESIZE LANDSAT IMAGE,可是位置对不上,两个文件在ENVI里面可以LINKED,所以说明
是在一个IMAGE里面,但BOUNDARY应该位于IMAGE的右半部分,但现在在左半部分,有什
么方法可以移动吗,让BOUNDARY MASK在对的地方?
不知道自己说清楚了没,谢谢大家了.... |
|
y*********d 发帖数: 1013 | 3 【 以下文字转载自 GeoSpace 讨论区 】
发信人: yellowchild (yellowchild), 信区: GeoSpace
标 题: 如何在ENVI里面用SHAPEFILE做MASK?
发信站: BBS 未名空间站 (Thu Apr 1 17:27:32 2010, 美东)
我的BOUNDARY文件是从SHAPEFILE文件转的RASTER文件,用这个RASTER文件做MASK去
RESIZE LANDSAT IMAGE,可是位置对不上,两个文件在ENVI里面可以LINKED,所以说明
是在一个IMAGE里面,但BOUNDARY应该位于IMAGE的右半部分,但现在在左半部分,有什
么方法可以移动吗,让BOUNDARY MASK在对的地方?
不知道自己说清楚了没,谢谢大家了.... |
|
y*********d 发帖数: 1013 | 4 【 以下文字转载自 GeoSpace 讨论区 】
发信人: yellowchild (yellowchild), 信区: GeoSpace
标 题: 如何在ENVI里面用SHAPEFILE做MASK?
发信站: BBS 未名空间站 (Thu Apr 1 17:27:32 2010, 美东)
我的BOUNDARY文件是从SHAPEFILE文件转的RASTER文件,用这个RASTER文件做MASK去
RESIZE LANDSAT IMAGE,可是位置对不上,两个文件在ENVI里面可以LINKED,所以说明
是在一个IMAGE里面,但BOUNDARY应该位于IMAGE的右半部分,但现在在左半部分,有什
么方法可以移动吗,让BOUNDARY MASK在对的地方?
不知道自己说清楚了没,谢谢大家了.... |
|
y*********d 发帖数: 1013 | 5 【 以下文字转载自 GeoSpace 讨论区 】
发信人: yellowchild (yellowchild), 信区: GeoSpace
标 题: 如何在ENVI里面用SHAPEFILE做MASK?
发信站: BBS 未名空间站 (Thu Apr 1 17:27:32 2010, 美东)
我的BOUNDARY文件是从SHAPEFILE文件转的RASTER文件,用这个RASTER文件做MASK去
RESIZE LANDSAT IMAGE,可是位置对不上,两个文件在ENVI里面可以LINKED,所以说明
是在一个IMAGE里面,但BOUNDARY应该位于IMAGE的右半部分,但现在在左半部分,有什
么方法可以移动吗,让BOUNDARY MASK在对的地方?
不知道自己说清楚了没,谢谢大家了.... |
|
s******s 发帖数: 505 | 6 How to convert the shapefile road network into a graph,
for example, in adjacency matrix or linked nodes?
Thanks! |
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y*********d 发帖数: 1013 | 7 我的BOUNDARY文件是从SHAPEFILE文件转的RASTER文件,用这个RASTER文件做MASK去
RESIZE LANDSAT IMAGE,可是位置对不上,两个文件在ENVI里面可以LINKED,所以说明
是在一个IMAGE里面,但BOUNDARY应该位于IMAGE的右半部分,但现在在左半部分,有什
么方法可以移动吗,让BOUNDARY MASK在对的地方?
不知道自己说清楚了没,谢谢大家了.... |
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w*****3 发帖数: 910 | 8 看来来对版了。求如何用ARC/INFO®, PC ARC/INFO®, Spatial Database
Engine™ (SDE™), ArcView® GIS,
or BusinessMAP™ software.
这类的软件生成一个地图的shapefile
多谢。
膜拜大牛! |
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t********r 发帖数: 4908 | 9 地图是个图,你说的shapefile是图上的数据 |
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l*******r 发帖数: 407 | 10 If you use ArcView, open Arccatalog, then you can create a new file as
shapefile |
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s*******1 发帖数: 146 | 11 First, you should have a US map (Polygon shapefile),
then, import your point data into ArcGIS, create a point shapefile,
then, clip the point shapefile by the US polygon shapefile,
you get a a clipped US polygon shapefile.In this map, the points in US have
been merged into the US map. Go to the dbf file associated with the clipped
file, you get the points in the US. You can import data into Excel or SAS
to do future analysis. |
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s*******1 发帖数: 146 | 12 First, you should have a US map (Polygon shapefile),
then, import your point data into ArcGIS, create a point shapefile,
then, clip the point shapefile by the US polygon shapefile,
you get a a clipped US polygon shapefile.In this map, the points in US have
been merged into the US map. Go to the dbf file associated with the clipped
file, you get the points in the US. You can import data into Excel or SAS
to do future analysis. |
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j*w 发帖数: 60 | 13 Thanks fwch and mel. Since I am projecting shapefiles, corpscon does not
take shapefile projections. I have someone showed to me how to successfully
project the shapefiles in ArcGIS. Somehow, the projection utility in Arcview
3.2 (the only GIS software that our office has) does not work. We might
consider buying AutoCAD Map to the projection. |
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j**l 发帖数: 429 | 14 把Shapefile转换为SQL2008格式的软件.
以前在shapegis.nets上, 现在这个网站都连不上了.
在网上找了也没有其他地方下载.
如果哪位大佬以前下载了的,请分享一下,谢谢.
或者有其他方法转换Shapefile to SQL2008? |
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s*******1 发帖数: 146 | 15 find the centroid of a polygon, then combine with the point data, create a
point shapefile, import the shapefile into Geoda, get spatial weight matrix,
you find the distance between two points, then find the shortest one.
location |
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y*********d 发帖数: 1013 | 17 They have different coordinate system. I don't know how to convert them. |
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a*********n 发帖数: 1331 | 18 第一个问题:2010 ACS 就没办法下载一个CITY里所有block groups的demographic
data. 只能下载一个COUNTY里所有block groups的data。
How to download demographic census data in all the block groups in a CITY,
instead of downloading demographic data in block groups in a COUNTY?
第二个问题:Tiger block groups shapefile的Key ID是"GEOID",对吧?
2010 ACS里的KeyID是“GEO_GEOID",然后把这个分成两部分
,第二部分正好应该与Tiger file里的 "GEOID" 一致,应该是match的ID,对吧?
可是我怎么也join不了啊!!! 问题在哪???
难道join的两个files必须相同行数(两个都是同城市的block groups),不能一个多
(county) 一个少(city)?
很急啊!!!!!! |
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v*****k 发帖数: 7798 | 19 A start-up close to Los Angeles is hiring Senior Software Developers and
Senior Web Application Developers. Please send your resume to
v*****[email protected]
Senior Software Developer:
Responsibilities
Build and design desktop Java applications (e.g., data import,
conversion, text matching and integration utilities) for Windows
Design, implement, test, document, and support software technologies
that extend the Geosemble GeoXray product.
Work closely with other software engineers, research directors ... 阅读全帖 |
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z****n 发帖数: 15 | 20 谢谢 我已经准备下一个了 呵呵
开始寒暄一下,然后让我介绍一下GIS的背景,还有以前工作的大概情况;
然后问我thesis做的web app, 他问了关于数据,geoprocessing tool, spatial
analysis,还有我运行的一些功能的问题;然后问了GIS和CAD之间转换,BIM的一些问
题,其实很基础...
还问了一些遥感方面和python的问题,还有关于spatial reference, georeferencing
很简单。还有shapefile的一些问题,我还让他重复了一遍不好意思记不全了。。
最后问了一个Projection的问题,他问了我两个很奇怪的Projection的区别和应用,我
没有答好。我还是应该回炉在好好学习学习 |
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l******9 发帖数: 579 | 21 【 以下文字转载自 Programming 讨论区 】
发信人: light009 (light009), 信区: Programming
标 题: error draw map from shape file Python 3.2 basemap
发信站: BBS 未名空间站 (Sat Feb 14 13:51:37 2015, 美东)
I am working on drawing map from shape file in Python 3.2 basemap.
But, the longitude values at the bottom axis are only shown partially. Also,
all latitude values are missing.
Here is my python code.
import shapefile as sf
import sys
import numpy as np
import matplotlib.pylab as plt
from mpl_toolkits.basemap import Basemap
ma... 阅读全帖 |
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a**e 发帖数: 8800 | 22 再一次证明了美国反枪势力是反对合法枪支而且仅仅是反对合法枪支
DALLAS, May 9, 2013 - The revolutionary concept of 3-D printed firearms has
been building momentum for months now. Online observers, innovators,
investors and the generally curious celebrated as the first completely 3-D
printed handgun became a reality. Since the blueprint for “The Liberator”
hit the web, the file was downloaded more than 100,000 times in a few days.
Today, the government shut it down.
Read more: http://communities.washingtontimes.com/neighborhood/... 阅读全帖 |
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l******9 发帖数: 579 | 23 I am working on drawing map from shape file in Python 3.2 basemap.
But, the longitude values at the bottom axis are only shown partially. Also,
all latitude values are missing.
Here is my python code.
import shapefile as sf
import sys
import numpy as np
import matplotlib.pylab as plt
from mpl_toolkits.basemap import Basemap
map = Basemap(projection='stere', lon_0=-106.4, lat_0= 31.9, lat_ts = 31.9
,
llcrnrlat=31.7, urcrnrlat= 31.85,
llcrnrlon=-106.5 , urcrnrlon= -1... 阅读全帖 |
|
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A****S 发帖数: 978 | 25 在arcview 3.2里shapefile的projection不是on the fly的,就是如果两个文件的
projection如果不一样的话加在同一个view里是重合不到一起的,最好是加到arcmap里
查查。
选择Nadcon是对的,另外就是UTM的unit如果对的话应该会重合到一起的。好像它的
default是feet, not meter,在project时最后确定一下。
用arctoolbox的projection wizard最方便。
meters |
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c*****a 发帖数: 3965 | 26 【 以下文字转载自 GeoSpace 讨论区 】
发信人: chentia (tia), 信区: GeoSpace
标 题: 问一个GIS的问题
发信站: BBS 未名空间站 (Tue Apr 6 20:33:24 2010, 美东)
如何用VB读出一个shapefile的extent值(上下左右4个)?谢谢 |
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C*********g 发帖数: 3728 | 27 almost every researcher has used ESRI national border shapefile, right? then
anyone could be charged as long as someone wishes to. |
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C*********g 发帖数: 3728 | 28 almost every researcher has used ESRI national border shapefile, right? then
anyone could be charged as long as someone wishes to. |
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n*****r 发帖数: 2447 | 29 It is a very stupid question -_____-, but I still want to know how.
I have the DEM file, and now i just need a small piece of it. I have a
polygon(shapefile), which is the boundary of a watershed, and now I want to
cut the DEM file using this polygon. But Arc just does not allow me to do
that. I used the Analysis Tools--Extract--Clip. But I can not input the DEM
file...Why?
I am not a master of GIS, just need to use the DEM file to finish my
hydrologic analysis.....
Thank you.... |
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C*********g 发帖数: 3728 | 30 that's nice. When I learned AML years ago, my teacher also told me that's
not possible to clip to a shapefile...
module? |
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S****t 发帖数: 1186 | 31 one needs to convert the shapefile to coverage first to use the command
mentioned by myaspect. |
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e*****a 发帖数: 321 | 32 在editing模式下,编辑( double-click)某个shapefile,一次只能显示一个feature
的所有vertex。问:可以一次显示所有feature的所有vertex么?
duoxie |
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n*****r 发帖数: 2447 | 33 polyline shapefile 有7000多个record,用toolbox里面的feature to polygon转成
polygon之后,变成只有4000多record,而且polyline的attribute table里面所有的
field都没有了。怎样才能保有原来polyline的attribute呢?因为INDEX也没有了所有
没办法和原来的table join。
我试过用command,还是没有办法保存原来的attribute啊,这是怎么回事呢? |
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c*****a 发帖数: 3965 | 34 如何用VB读出一个shapefile的extent值(上下左右4个)?谢谢 |
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c*****n 发帖数: 173 | 35 看你用不用arcobjects了。如果用,上面给了答案,如果不用,直接读.shp二进制文件
。shapefile的格式是公开的。 |
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|
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a*********n 发帖数: 1331 | 38 第一个问题:2010 ACS 就没办法下载一个CITY里所有block groups的demographic
data. 只能下载一个COUNTY里所有block groups的data。
谁知道怎样下载一个城市的所有block groups的demographic data?
How to download demographic census data in all the block groups in a CITY,
instead of downloading demographic data in block groups in a COUNTY?
第二个问题:Tiger block groups shapefile的Key ID是"GEOID",对吧?
2010 ACS里的KeyID是“GEO_GEOID",然后把这个分成两部分
,第二部分正好应该与Tiger file里的 "GEOID" 一致,应该是match的ID,对吧?
可是我怎么也join不了啊!!! 问题在哪???
难道join的两个files必须相同行数(两个都是同城市的block groups),不能一个多... 阅读全帖 |
|
|
a*********n 发帖数: 1331 | 40 第一个问题:2010 ACS 就没办法下载一个CITY里所有block groups的demographic
data. 只能下载一个COUNTY里所有block groups的data。
谁知道怎样下载一个城市的所有block groups的demographic data?
How to download demographic census data in all the block groups in a CITY,
instead of downloading demographic data in block groups in a COUNTY?
第二个问题:Tiger block groups shapefile的Key ID是"GEOID",对吧?
2010 ACS里的KeyID是“GEO_GEOID",然后把这个分成两部分
,第二部分正好应该与Tiger file里的 ”GEOID“一致,应该是match的ID,
对吧?
可是我怎么也join不了啊!!! 问题在哪??? 很急啊!!!!!!
难道join的两个files必须相同行数(两个都是同城市的block gro... 阅读全帖 |
|
a*********n 发帖数: 1331 | 41 第一个问题:2010 ACS 就没办法下载一个CITY里所有block groups的demographic
data. 只能下载一个COUNTY里所有block groups的data。
谁知道怎样下载一个城市的所有block groups的demographic data?
How to download demographic census data in all the block groups in a CITY,
instead of downloading demographic data in block groups in a COUNTY?
第二个问题:Tiger block groups shapefile的Key ID是"GEOID",对吧?
2010 ACS里的KeyID是“GEO_GEOID",然后把这个分成两部分
,第二部分正好应该与Tiger file里的 ”GEOID“一致,应该是match的ID,
对吧?
可是我怎么也join不了啊!!! 问题在哪??? 很急啊!!!!!!
难道join的两个files必须相同行数(两个都是同城市的block gro... 阅读全帖 |
|
l******9 发帖数: 579 | 42 【 以下文字转载自 Programming 讨论区 】
发信人: light009 (light009), 信区: Programming
标 题: error draw map from shape file Python 3.2 basemap
发信站: BBS 未名空间站 (Sat Feb 14 13:51:37 2015, 美东)
I am working on drawing map from shape file in Python 3.2 basemap.
But, the longitude values at the bottom axis are only shown partially. Also,
all latitude values are missing.
Here is my python code.
import shapefile as sf
import sys
import numpy as np
import matplotlib.pylab as plt
from mpl_toolkits.basemap import Basemap
ma... 阅读全帖 |
|
l******9 发帖数: 579 | 43 【 以下文字转载自 Programming 讨论区 】
发信人: light009 (light009), 信区: Programming
标 题: error draw map from shape file Python 3.2 basemap
发信站: BBS 未名空间站 (Sat Feb 14 13:51:37 2015, 美东)
I am working on drawing map from shape file in Python 3.2 basemap.
But, the longitude values at the bottom axis are only shown partially. Also,
all latitude values are missing.
Here is my python code.
import shapefile as sf
import sys
import numpy as np
import matplotlib.pylab as plt
from mpl_toolkits.basemap import Basemap
ma... 阅读全帖 |
|