Inserting points in postgis with pdo (php)
Geographic Information SystemsHow to insert data in postgresql using php? php $db = pg_connect(“host=localhost port=5432 dbname=postgres user=postgres password=myadmin123”); $query = “INSERT INTO book VALUES (‘$_POST[bookid]’,’$_POST[book_name]’, ‘$_POST[price]’,’$_POST[dop]’)”; $result = pg_query($query); ?> How to fetch data from database in php using PostgreSQL? $psql = new psql(‘localhost’,’database’,’user’,’password’); $psq = pg_query(“SELECT * FROM students”); $result = pg_fetch_row($psq); var_dump($result); php. How to
WMS/WMTS/TILE free for OpenLayers 4
Geographic Information SystemsWhat is the difference between WMS and WMTS? A WMS is calculated on the server side and delivers one image per request. A WMTS delivers tiles that have been pre-renderd on the server side, and cached on the client side. This will reduce waiting time for the data and bandwith. What is WMS tile? A
Remove duplicate feature based on Condition
Geographic Information SystemsHow do I remove duplicates conditionally? Find and remove duplicates Select the cells you want to check for duplicates. Click Home > Conditional Formatting > Highlight Cells Rules > Duplicate Values. In the box next to values with, pick the formatting you want to apply to the duplicate values, and then click OK. How do
Enabling Z value
Geographic Information SystemsHow do I enable Z? How To: Enable z-values on an existing shapefile Add the Output table to the ArcMap document, and right-click the . dbf file in the Table Of Contents > Display XY Data. In the Display XY Data dialog box, set the X, Y, and Z Field values, and click OK to
Qgis osx : Openstreetmap Plugin and tags
Geographic Information SystemsHow to install OSM plugin in QGIS? Installation. It is a “core” plugin which comes with QGIS when it’s first installed, and just needs to be enabled. Go to ‘Plugins’ menu -> ‘Manage Plugins…’ and find OpenStreetMap. Tick the plugin to enable it. How to add OpenStreetMap to QGIS? Select a OpenStreetMap’s Standard tile layer
Adding new vector layer. Should .shp file only be added or .shp plus corresponding .shx, .dbf, etc.?
Geographic Information SystemsWhat is the difference between a SHX and SHP file? shp : the file that contains the geometry for all features. . shx : the file that indexes the geometry. How do I add vector data in QGIS? Click on the “Layer” menu, mouse-over “Add Layer” and click “Add Vector Layer…” You can also click
How to get labels to diplay in Google Earth after saving to KML?
Geographic Information SystemsHow do I show labels in KML in Google Earth? Note: The Label Field can be changed by navigating to the Labels tab in Layer Properties. Use the Map to KML tool to convert the data to a KML or KMZ file, which can be viewed in Google Earth. How do I turn on labels
GPS waypoint mapping with android phone
Geographic Information SystemsHow do I use GPS waypoints on Android? Using Google Maps From the main menu, select Google Maps. Go to the location where you want to add your waypoint. Select the Add Tool to create the waypoint. Tap on the location on the map to create a Waypoint there. How do I set a waypoint
Why the labels/buttons（like run/save, etc.） above the google earth engine code editor are grey and not working?
Geographic Information SystemsWhy is my run button not working in Google Earth Engine? This means there was a problem initializing the Earth Engine API client. Usually you should see an error message pop up, but if it hasn’t yet timed out, or if you dismiss the dialog, you will get this state with grayed-out buttons (and no
Creating multiple select dropdown list in QGIS
Geographic Information SystemsHow can I select more than one dropdown option? Windows: We need to hold down the CTRL button to select multiple options. Mac: We need to hold down the command button to select multiple options. How do I create a drop down list in Qgis? For QGIS 3: Right mouse click over the layer, and