hdf viewer

When using gdal to read data from HDF, netcdf, and other datasets, two steps are generally required: first, to obtain the sub-dataset in the dataset; second, to read the image data from the sub-dataset obtained in the first step. There are many subdatasets in a general HDF image, such as frequently-used modem_data. When you use ENVI to open the image, the following dialog box is displayed to allow users to

Hadoop processes HDF files 1. Preface HDF files are a common data format in remote sensing applications. Due to their highly structured features, I have been troubled for a long time by using Hadoop to process HDF files. Therefore, Google's various solutions did not find an ideal solution. I have also referred to a post officially published by HDFGroup (the websi

Merra is a re-analysis data of NOAA, HDF data follow the Coards protocol, reading is relatively simple.Script Program:#Add Data Filefolder ='d:/temp/hdf/'FNS='MERRA300.PROD.ASSIM.TAVG1_2D_SLV_NX.20150101.SUB.HDF'fn= Folder +Fnsf=AddFile (FN) VName='t2m'T=f[vname]t2m=t[0,:,:]#Plotaxesm () Mlayer= Shaperead ('d:/temp/map/country1.shp') geoshow (mlayer) layer= IMSHOWM (t2m, 20) Colorbar (layer, orientation='Ho

The FY3A satellite has AOD product data in HDF format, with a global range of 0.05 degrees resolution. To reset the X/y dimension after reading the data file variable, the data is reversed on the Y axis and needs to be divided by 10000 to get the AOD value.Script Program:#Add Data Filefn ='D:/TEMP/HDF/FY3A_MERSI_GBAL_L3_ASL_MLT_GLL_20140331_AOAM_5000M_MS.HDF'F=AddFile (FN)#Get Data Variablev = f['aerosol_op

A period of time ago because a business needs to parse a HDF format file. Before that, I don't know what the HDF file is. The explanation of Baidu Encyclopedia is as follows: HDF is a self-describing, multi-object file format for storing and distributing scientific data. HDF is a new data format for efficient

Parse HDF files using Python Some time ago, a file in HDF format needs to be parsed due to a business requirement. Before that, I do not know what HDF files are. Baidu encyclopedia's explanation is as follows: HDF is a self-describing and multi-object file format used to store and distribute scientific data.

Hive supports custom implementation of SQL functions in Java code, with the following steps1: Inherit UDF, implement function evaluate, parameter return value can be overloaded2:jdbc:hive2://ht03:10000/default> Add Jar/opt/hive-udf/udf-str.jar3:create temporary FUNCTION tostring as ' Com.htdc.etl.server.demo.UDFDemo ';4:select Demo (' 1 ', ' 2 ') from car limit 1;PS: The above-mentioned way to create a function is a temporary function, in the current session is valid, so in code execution, you m

FY3A Satellite has AOD product data, HDF format, here is an example to read and display this type of data using the Meteoinfo script program.The script is as follows:#-----------------------------------------------------#Author:yaqiang Wang#date:2015-3-18#purpose:read fy3a AOD hdf5 data#Note:sample#----------------------------------------------------- fromOrg.meteoinfo.data.meteodataImportMeteodatainfo fromOrg.meteoinfo.data.meteodataImportDimension f

Because the structure of the satellite data (HDF data) is different from that of geotif, you must pay special attention to it when reading the data. Geotif data is generally a file that contains data in multiple bands. While while the modemis, a file contains multiple subdatasets. Gdal. Each subdataset contains multiple band data. In addition, the default compiled gdal does not include support for the modem_data. You need to download the source code f

; +;:D Escription:; Describe the procedure.; Author:dyq 2009-7-19;;; -pro TEST_READHDF compile_opt idl2 file = File_dirname (Routine_filepath (' TEST_READHDF ')) + $ ' \data\mod04_l2. A2004196.0140.005.2007023163311.HDF '; ISHDF = HDF_ISHDF (file) IF ishdf EQ 0 then RETURN; ; Call IDL's own function to obtain information of current HDF data; Hdf_info,file; If we need to do a geo-corrective operation,

Many of the terrestrial data of the MODIS satellite are sinusoidal projections, and the data is divided into 10*10 (equatorial area) tiles (http://modis-land.gsfc.nasa.gov/MODLAND_ grid.html), the data format is usually the Hdf-eos format, and as the EOS format Meteoinfo can automatically read the data's coordinate information (including projection, etc.).Script Program:f = addfile ('d:/temp/hdf/mod10a1. A2

Examples of airs Swath HDF data in polar stereographic (South Pole) projection close to the rectangle, you need to read from the data latitude and longitude and related data array, using the Surfacem function to draw Swath data (scatter), In the Surfacem function, the latitude data is projected into the destination projected coordinate system (defined in the AXESM function), and surface data (that is, lattice data) is generated from the 2-D scatter da

Observer Mode Observer Achieving the goal: transform the Select box to change the content area and ad areaGeneral Ideas1: Judging the selected value2: Order down, modify the content area according to the value3: Edit the ad area again. if'男'{ 内容区背景变灰 广告区内容变成男人话题}elseif'女'){ 内容区背景变粉 广告区内容变成女人话题} So what are the questions:1: Let you choose to cause 3 changes in the area, whether to modify the If/elseif section2: If you choose female style, but do not change the powder, now popular purple

mainly used for correction of HDF data. For example, the marine satellite data and the modemdata. * Generally, this type of data contains two 32-bit floating point data sets of latitude and longpolling. * It is used to store the longitude and latitude coordinates of the data, use these two methods in the correction process */class imgalg_api cimagegeolocwarp {public:/*** @ brief constructor, geolocation table correction * @ Param pszsrcfile raw data

.localdomain6192.168.137.30 hadoop-01 (see our machine name has been configured with the relevant IP address information)Need to see what the three processes of HDFs startup are, which is written in a shell scriptCat sbin/start-dfs.shSuch as:File display namenodes on equals [[email protected] hadoop-2.8.1]$ sbin/start-dfs.shStarting namenodes on [localhost], so the local machine name is started2.datenode is calling the slaves fileFind out what's under slaves and discover that it's localhost, and

A long time ago, I made a little thing for the mentor to use for RE, which will convert the vertex cloud and the IG file. I have learned about the formats of the IG file. I have never liked exclusive sharing, so I will share it with you. I did not expect many people to pay attention to it. Thank you very much for your mutual learning. By chance, I found that there is now a free viewer for the IG file, which is very good. In this way, it is unnecessary

Mobile js Image Viewer and js Image Viewer This article provides examples to share with you how to use the js Image Viewer plug-in and how to create a webpage Image Viewer for your reference. The specific content is as follows: The development of a custom image Viewer for th

工欲善其事 its prerequisiteThe Java development in the eyes of Stormy, an old Domino programmer, I mentioned the large number of logs that are being encountered in Java development. Server Console Brush-like scrolling, log files grow rapidly, debug when the relevant information is often flooded with examples, in many logger gushing output, to find out where the error is sometimes very cost-effective eye. The role of the log is no doubt that large-scale projects are not uncommon in the production of l

Knowledge in this article involves:Crystal report 9Applicable:All VersionsJava ViewerComparison Outline Some crystal decisions products provide two Java viewer types: · (Intelligent) Java Viewer · Java Plug-In Viewer What is the difference between these two types of viewers? Solution When you select "(Intelligent) Java viewer