spatial hadoop

1, the purpose of the experimentAnswer the question before the experiment-using different partition granularity for the same data, but creating global spatial indexes, Q: Are their global spatial indexes consistent?How can it be considered the same? is the tree structure of r-tree consistent? is the number of spatial index entries consistent with the size? Strict

Vernacular spatial statistics: spatial autocorrelationSpatial autocorrelation, is certainly the space statistics inside the first stumbling block, a lot of people met this tall on the vocabulary, immediately found that these five words I seem to know, but in the end said what? I don't know.If open all kinds of textbooks, from statistics to mathematics to physics, all kinds of explanations have put up a pair

Oracle Spatial spatial data SQL query related instances -- Select dlbm, dlmc, trim (zldwdm) as zldwdm_1 from gzdt where nvl (zldwdm, 'T') = 'T' or zldwdm = '';Update gzdt set zldwdm = '000000' where nvl (zldwdm, 'T') = 'T' or zldwdm = '';Commit;Delete from gzdt where zldwdm like '20160301'Commit;// Obtain the space areaUpdate gzdt set mj = MDSYS. sdo_geom.sdo_area (geometry, 0.0000000005 );// Obtain the len

ArticleDirectory Making Oracle Spatial your default geometry Schema How does ArcSDE use Oracle Spatial? (How to use Oracle Spatial in ArcSDE) ArcSDE supports Oracle Spatial or Oracle locator for storing and managingGeometry in an Oracle database. to use it, you must have sdo_geometry specifiedFor the

Mysql supports spatial databases and uses HibernateSpatial for spatial data persistence. Hibernate 1. spatial data: if you develop maps, you will certainly be familiar with spatial data, that is, map elements, points, lines, and graphics, which have x and y coordinates. 2. mySQL supports

1. Spatial data: If you do the development of the map, then the spatial data must not be unfamiliar, that is, map elements namely, points, lines, graphs, they have x, y coordinates of information2.MySQL for the spatial database itself is support, but the support is not very comprehensive, in fact, the professional space database is not postgis, the reason for usi

CREATE TABLETb_geo (IDINT PRIMARY KEYAuto_increment,nameVARCHAR( -) not NULL, PNT Point not NULL, SPATIALINDEX' Spatidx ' (' PNT ')!--1. Create a spatial index when creating a table --) ENGINE=MYISAMDEFAULTCHARSET=UTF8;!--The database table engine is set to Myisam-->!--2. Create an index on a table that already exists--!--ALTER TABLE tb_geo ADD SPATIAL INDEX spatidx (PNT);!--3. Create an index using the cre

Oracle Spatial's Spatial data applications are similar to those of Microsoft SQL Server 2008. SQL Server 2008 provides SQLCLR-based programming support, and Oracle Spatial does not yet have complete component support. In actual development and application scenarios, we can select a compromise solution, such as reading space data into a common space data expression format (such as WKT ), the open-source WKT

Original Spatial adjustment can be used to correct the location of a factor so that it can match the data in the database more accurately; it can also match the units of data obtained from a digital device or scanner to the units in the real world. It can also match low-precision data to high-precision data. Space correction tools include space transform, rubbersheet, edge match, and attribute transfer. Each tool has one option. This document takes th

Label:Original: SQL Server 2008 Spatial Data Application series six: SQLCRL-based spatial data programmabilitytips, the prerequisites for reading this blog post are as follows:1. This sample is based on Microsoft SQL Server R2 Commissioning. 2. Experience in Transact-SQL programming and use of Management Studio. 3. Have experience using Microsoft Visual Studio for Microsoft. NET Framework Development. 4. Be

http://www.dengfanxin.cn/?p=403Original address I have translated the main parts of an important work on object detection, sppnet, in the paper. Sppnet's original intention is very clear, is that the network to the size of the input is more flexible, analysis to the convolutional network size is not required, the requirements of the fixed size is entirely from the whole connection layer, so the use of spatial pyramid pooling method to connect

In the study R-CNN series, always see Spp-net figure, many have doubts in this paper found the answer.Paper:Spatial Pyramid Pooling in deep convolutional Networks for Visual recognition Transferred from: http://blog.csdn.net/xzzppp/article/details/51377731Also refer to: http://zhangliliang.com/2014/09/13/paper-note-sppnet/http://sinb.github.io/Whatyouknowabout/spp-net-1/1. IntroductionSpatial pyramid pooling, so that any size of the feature map can be converted to a fixed-size eigenvector, which