Table of Contents 1. Use LINQ to operate arrays and collections 2. Use LINQ to operate DataSet data set 1.AsEnumerable() method 2.CopyToDataTable() method 3.AsDataView() method 4.Take() method 5.Sum() method 6.Example (1) Source code (2) Generate effect 3. Use LINQ to operate XML 1.Load() method of XElement class 2.SetAttributeValue() method of XElement class 3.Add() method of […]
Tag: odata
yum error: failure: repodata/repomd.xml from xxxxxx: [Errno 256] No more mirrors to try. Solutions and yum installation issues
yum error: failure: repodata/repomd.xml from xxxxxx: [Errno 256] No more mirrors to try. Solutions and issues about reinstalling yum and python in Centos7.5 1804 Zero. Preface 1. yum error: failure: repodata/repomd.xml from xxxxxx: [Errno 256] No more mirrors to try. Solution Screenshot of the problem:  Solution steps: 1. Delete the old […]
Solution: Collecting package metadata (current_repodata.json)/ Solving environment
Error when installing Pytorch: Collecting package metadata (current_repodata.json): – WARNING conda.models.version:get_matcher(556): Using .* with relational operator is superfluous and deprecated and will be removed in a future version of conda. Your spec was 1.7 .1.*, but conda is ignoring the .* and treating it as 1.7.1 done Solving environment: unsuccessful initial attempt using frozen solve. […]
Support issues of Geodatabase+OpenGauss series products
Based on OpenGauss series mainly include Huawei gaussDB for openGauss, vastbase G series products, GBase8c, GBase8s, Shentong For OpenGauss 1. You need to set DBCOMPATIBILITY=’PG’ when building the database, otherwise there will be a problem that the text data cannot be entered when inserting data later. Specifically, you can query it in pg_database openGauss=# select […]
ExcelToDatabase_web: a web tool for batch importing Excel to database
ExcelToDatabase_web: A web tool for batch importing Excel to database Click here to download the latest version Introduction ExcelToDatabase_web is a web tool that can batch import excel to database. Automation is its biggest feature, because it can automatically create tables according to excel and finally import data into the database without any manual settings. […]
Batch change image_id.py of cocodataset_annotations
Batch change image_id.py of cocodataset_annotations Refer to https://blog.csdn.net/weixin_42362903/article/details/124869047 That is, https://github.com/HelloSZS/Common-tools_FOR_Object-detection/blob/master/ batch change image_id.py of cocodataset_annotations import os import json # 0. Extract from the dictionary # One.json file operation # 1. open json file # 2. Parse the content of the json file and generate a cache # 3. Use the operation of two […]
Python ignores NoData to calculate the average value of pixels of multiple remote sensing images: whitebox library
?This article introduces the every pixel of a large number of long time series raster remote sensing images based on the whitebox module in Python >Calculation of multi-time-series average value with ignoring NoData values. In the article Python ArcPy batch calculation of the average value of each pixel of multi-temporal remote sensing images, we introduced […]
failure: repodata/repomd.xml from xxxxxx: [Errno 256] No more mirrors to try.
When installing PostgreSQL on Linux today, an error occurred failure: repodata/repomd.xml from xxxxxx: [Errno 256] No more mirrors to try. #Install postgresql15-server sudo yum install -y postgresql15-server After looking at the error analysis, it seems that there is a problem with the yum source. After checking some information, try it 1. Method 1 Since there […]
ArcPy-based GDB geodatabase topology checking
ArcPy implements topology checking and outputs results ArcPy is a site-package that builds upon the successful arcgisscripting module and inherits arcgisscripting functionality. The goal is to create a foundation for performing geographic data analysis, data transformation, data management, and map automation through Python in a practical and efficient manner. Basic environment Python version: need to […]
Use of date filter in ABAP odata service
Query the use of filter operator list operator describe Corresponding C# operator eq equal == ne not equal to != gt more than the > the ge greater or equal to >= lt less than