Monthly Archives: November 2007
Pm v2.25
MD5 sum: f9d813cbf325c3eb93beb35f1335e1b3
Shugong’s baby girl
Qt for VS c++ 2005 EE
Qt 4.3.2 已经支持 Visual Studio C++ 2005 Express Edition了,但不提供Integration,要使用的话,大概使用makefile project再加一点定制,比如使用qmake .pro来生成makefile,通过一些配置,Qt就可以使用VS这个稳定和强大的平台了(比如Intellisense, Debug等都比其它如Eclipse出色,毕竟是商业的)
To install it, download Qt 4.3.2 open source from its ftp at ftp.trolltech.com, configure it using a -platform win32-msvc2005, then compile/link by running nmake.
One thing to be noted is we have to install Windows Core SDK, IE SDK (If no IE SDK, prompting by missing shlwapi.h), and optionally MDAC SDK if you are going to install ODBC, prior to configure Qt. VC++ 2005 Express Edition does not come with SDK. We should install SDK seperately. One way is to install this package by appropriate customing.
After installation, configure vcvar32.bat under "C:Program FilesMicrosoft Visual Studio 8Common7Tools" by adding "C:Program FilesMicrosoft Platform SDK for Windows Server 2003 R2Bin", "C:Program FilesMicrosoft Platform SDK for Windows Server 2003 R2Include", and "C:Program FilesMicrosoft Platform SDK for Windows Server 2003 R2Lib" to #path, #include and #lib respectively. Otherwise the compilation will complain it cannot find necessary header files.
完成了一个雷达数据到水文模型时间序列的转换程序包
我写了一个Instruction,大概从原始下载过来的XMRG二进制文件到可用的水文模型(如VIC)的时间序列大概要经过近10个步骤。不过实现了一个有意思的内插方法(与前Python算法相同),从HRAP网格到1/8度的转换时,由于每个1/8度网格覆盖多个HRAP格子,这个算法使用了面积加权来计算1/8度网格的平均降水。
现在完成上述任务大概需要2天。大家就可以在自己的桌面机器上用了,而不必一定要使用服务器(有大内存)。
没有时间做多线程或者并行优化,估计那样异步或并行处理性能会得到更好的提升。
Install Boost c++ library
2. download bjam source codes, which is required to build Boost binaries.
3. build bjam. In my environment, mingw compiler is used. type:
build.bat mingw
actually the build.bat is smart enough to detect the right compiler
at this point, we get bjam at it’s bin.ntx86 dir.
4. build boost. enter boost’s source dir, type:
bjam –toolset=gcc
make bjam compiled above, can be accessedwe should specifiy toolset as
it will be msvc by default that’s not what we expect.
5. to enable content assist, it would better change indexer to full.
Days without pirate software
Eclipse CDT MinGW debug error: error creating session
GeneratePolygonsByPoints utility
Author: Zhuotong Nan
Email: [email protected]
Date: Nov 21, 2007
ver: 1.0.0
Usage: GeneratePolygonsByPoints [data_file_name] {output shapefile name}
Rows*Cols (for ex, 260*250): (enter numbers of rows and cols for the source data file with
a format rows*cols. Incorrect input will stop the tool.)
data_file_name: source data file name; path can be included.
output shapefile name: optional, as its literal stated. path can be includes.
Supporting environment: Microsoft dotnet framework 2.0, ArcGIS 9.2 with dotnet assemblies, as
well as a valid ArcInfo license.
Remarks: Data file should be organized row by row (you should know exact row and column
number, which will be required to be entered after starting), starting from lower left corner.
In my initial case, the data file is generated by a modified Read_XMRG2 utility for XMRG
radar data file. The modified Read_XMRG2 will generate data with geographical coordinates
instead of HRAP coordinates as does original Read_XMRG2. Anyway, GeneratePolygonsByPoints
will also run against data file generated by original Read_XMRG2, however, with output
shapefile being in HRAP coordination.
Data file content looks like following:
-121.177570 37.897155 0.000000
-121.132468 37.907464 0.000000
-121.087345 37.917746 0.000000
-121.042201 37.928001 0.000000
-120.997037 37.938229 0.000000
The first column is longitude, second latitude, and the third precipitation value. The first
two columns represent that cells’ lower left coordinations. The first row indicates the lower
left cell; second is the next cell right to the first cell; after finishing a row, then begin
a row up the first row, and move upwards.
Output shapefile will be of geographic NAD83 datum. The first two columns will be converted
to points’ geographic location. Values (precp value in above example) will be lost. A new
field named "Index" will be generated to record this polygon’s lower left corner’s coordination
with a format of "lat_lon", for ex. 37.897155_-121.177570 for the first created cell. However,
you cannot depend on this field to link original source data file. In order to do link, you can
"ID" field in shapefile attribute table, which increases by one in consitence with source data
file.
As stated above, each cell is referred by its lower left corner’s coordination. The most upper
cells cannot be generated due to missing of necessary points (we only have lower edge’s
coord). Likewise, the most right cells are also missed.
The distribution also includes a test data file: xmrg0101199900z.out, with a 39*48 (rows*cols)
dimension.
For more information, please contact the author at [email protected].
Thanksgiving
在吃饭的时候听朋友讲了很多football的事情,我此前从不知道football,只是刚来的时候W告诉我Pitt有一只叫Steeler的球队,这里的local people都很狂热。一起吃饭的朋友对这东西也很懂了,讲了很多规矩和有趣的故事。Steeler的票据说已经卖到10年以后了,这意味着你现在买只能买10年以后的比赛门票。但也有其它方法,比如Steeler外出纽约比赛,因为纽约队很糟糕,所以纽约本地人不大看,Steeler fans就可以跟过去看。football球迷比soccer要文明,动手打架相对要少。football据说是最美国式的运动,也是现代化装备最好的运动。