Add remove_feature and remove_features

docs/api.md

@@ -182,6 +182,10 @@ An object with the layer api functions:
     - `new_feature`: Object, the new feature object
  - `add_features`: Function, add an array of new features, it takes one argument:
     - `new_features`: Array, an array of features
+ - `remove_feature`: Function, remove a feature, it takes one argument:
+    - `id`: String, the id of an existing feature to be removed
+ - `remove_features`: Function, remove an array of features, it takes one argument:
+    - `ids`: Array, an array of features ids
  - `get_features`: Function, get all the features of the layer, it takes no argument
 
 Example in Python:

package.json

@@ -1,6 +1,6 @@
 {
   "name": "kaibu",
-  "version": "0.1.46",
+  "version": "0.1.47",
   "scripts": {
     "serve": "vue-cli-service serve",
     "build": "vue-cli-service build",

src/components/layers/VectorLayer.vue

@@ -844,6 +844,19 @@ export default {
           const geojsonFeatures = format.readFeatures(geojson_data);
           me.vector_source.addFeatures(geojsonFeatures);
         },
+        remove_feature(id) {
+          const feature = me.vector_source.getFeatureById(id);
+          if (feature) me.vector_source.removeFeature(feature);
+        },
+        remove_features(ids) {
+          if (!Array.isArray(ids)) {
+            throw new Error("Please pass an id array");
+          }
+          for (let id of ids) {
+            const feature = me.vector_source.getFeatureById(id);
+            if (feature) me.vector_source.removeFeature(feature);
+          }
+        },
         get_features(config) {
           config = config || {};
           if (config.decimals === undefined) config.decimals = 2;