Description Vuex provides four commonly used auxiliary functions: the purpose is to map the corresponding data and functions in state(), mutaions{}, actions{}, getters{} in vuex, so that we can be more flexible in the component. Simply use these data and functions mapState mapMutations mapActions mapGetters Usage cases /src/store/index.jsState Manager import axios, { Axios } from […]
Tag: maps
[C#] Use of Mapster object mapping
Series of articles [C#] Number generator (define order number rules, fixed characters, serial numbers, business order numbers) Link to this article: https://blog.csdn.net/youcheng_ge/article/details/129129787 [C#] Date range generator (start date, end date) Link to this article: https://blog.csdn.net/youcheng_ge/article/details/129040663 [C#] Component development, calling dll component methods Link to this article: https://blog.csdn.net/youcheng_ge/article/details/129492112 [C#] Use of data entity classes Link to […]
Front-end (html) uses Echarts to draw heat maps – json data format
1. Download the echarts.js file from the official website 1.1 Echart official website: Download – Apache ECharts 1.2 Drag the downloaded echarts.js file to the same directory as the html file 2. Use Python to implement data file format conversion (.xlsx-.json) 2.1 Reasons for converting data format PM2.5 monitoring data: 30 days a month, monitoring […]
Robot control algorithm-How to use C++ to read raster maps in pgm format and convert them into data in ROS map format?
1.Introduction I am currently working on a global planning + local dynamic planning project. The current problem I am encountering is how to use C++ to process pgm map files. That is to say, map information must be combined with pixels. So we need to know the underlying principles of map reading and processing so […]
Add watermarks to WebGIS tile maps (vector tiles, raster tiles)
Watermark technology Watermark can provide strong evidence of the ownership of products receiving copyright information, and can monitor the spread of protected data, authenticate and control illegal copies, etc. It is also needed in today’s popular online maps Watermark technology protects map data. This article will introduce how to add watermarks to tile maps, including […]
[Docker] 3. Docker deploys nginx, maps ports, and mounts data volumes
1.Docker Deployment Nginx and port mapping Docker deploy Nginx, first you need to download the nginx image, and then start the image to run an nginx container. 1. Download nginx image and start the container #Check whether there is an nginx mirror: No nginx mirror was found [root@localhost zph]# docker images | grep nginx #Download […]
When lombok and mapstruct are used at the same time; the get and set methods of the pojo class fail to be generated, and the implementation class of mapstruct fails to be generated. It is just a new object.
Project scenario: When lombok and mapstruct are used at the same time; the get and set methods of the pojo class fail to be generated, and the implementation class of mapstruct fails to be generated. It is just a new object. Project related background: In recent work, I have been converting objects related to DTO, […]
[C++ and data structures] Bitmaps and Bloom filters
Table of Contents 1. Bitmap 1. The concept of bitmap 2. Implementation of bitmap ①.Basic structure ②、set ③、reset： ④、test ⑤. Question: ⑥. Advantages, disadvantages and applications of bitmaps: ⑦. Complete code and testing 2. Bloom filter 1. Proposal of Bloom filter 2. Implementation of Bloom filter ①.Basic structure ②. Implementation of three Hash functors ③、 […]
First-level pointers, memory maps, segfaults
Pointer Advantages 1. Make the program more concise, compact and efficient 2. Effectively express more complex data structures 3. Dynamically allocate memory 4. Get a function return value of more than one number Concept Address: Each byte unit in memory has a number Pointer: Pointers are addresses Pointer variable: The variable used to store the […]
Use openlayers to load offline tile maps
1. Demand background Our current project uses openlayer + geoServer’s own vector map. It is a project in cooperation with the public security. Since most governments use sky maps, we need to change geoServer’s vector maps to sky maps and use them with openlayers. Openlayers also You can switch between different map data sources, although […]