Sketched more of basic API

loader.py

@@ -0,0 +1,49 @@
+
+import json
+
+
+#################
+# USER FUNCTIONS
+#################
+
+# convenience methods for loading from different sources
+
+def from_url(url, format=None):
+    # first get string from url
+    # ...
+
+    # then load
+    if format:
+        # load string using specified format
+        pass
+    else:
+        from_unknown_text(string)
+
+def from_file(filepath):
+    if filepath.endswith(".prj"):
+        string = open(filepath, "r").read()
+        from_esri_wkt(string)
+    
+    elif filepath.endswith((".geojson",".json")):
+        crsinfo = json.load(filepath)["crs"]
+        
+        if crsinfo["type"] == "name":
+            string = crsinfo["properties"]["name"]
+            from_unknown_text(string)
+            
+        elif crsinfo["type"] == "link":
+            url = crsinfo["properties"]["name"]
+            type = crsinfo["properties"].get("type")
+            from_url(url, format=type)
+            
+        else: raise Exception("invalid geojson crs type: must be either name or link")
+
+    elif filepath.endswith((".tif",".tiff",".geotiff")):
+        pass
+        # ...
+
+
+
+
+                                      
+