diff --git a/Leaton_test_v2.json b/Leaton_test_v2.virgis
similarity index 98%
rename from Leaton_test_v2.json
rename to Leaton_test_v2.virgis
index 029ee09..cb954b6 100644
--- a/Leaton_test_v2.json
+++ b/Leaton_test_v2.virgis
@@ -9,9 +9,8 @@
     ]
   },
   "default_proj": "EPSG:4326",
-  "grid-scale": 1.0,
+  "map_scale": 1.0,
   "guid": "69b016df-8062-4b43-aeda-4b8c965eba73",
-  "Guid": "69b016df-8062-4b43-aeda-4b8c965eba73",
   "recordsets": [
     {
       "display-name": "Mapbox Map",
diff --git a/cardiff-bay.json b/cardiff-bay.virgis
similarity index 97%
rename from cardiff-bay.json
rename to cardiff-bay.virgis
index 314e908..fdc79ae 100644
--- a/cardiff-bay.json
+++ b/cardiff-bay.virgis
@@ -212,7 +212,6 @@
     ]
   },
   "default_proj": "EPSG:4326",
-  "grid-scale": 1.0,
-  "guid": "58b8f508-eb42-4c95-8988-ea376a6e7983",
-  "Guid": "58b8f508-eb42-4c95-8988-ea376a6e7983"
+  "map_scale": 1.0,
+  "guid": "58b8f508-eb42-4c95-8988-ea376a6e7983"
 }
\ No newline at end of file
diff --git a/dowlow_2021_v1.json b/dowlow_2021_v1.virgis
similarity index 99%
rename from dowlow_2021_v1.json
rename to dowlow_2021_v1.virgis
index 08cb749..b1d019e 100644
--- a/dowlow_2021_v1.json
+++ b/dowlow_2021_v1.virgis
@@ -9,9 +9,8 @@
     ]
   },
   "default_proj": "EPSG:4979",
-  "grid-scale": 1.0,
+  "map_scale": 1.0,
   "guid": "964ea21f-ee17-4710-9d3a-21e190271bcc",
-  "Guid": "964ea21f-ee17-4710-9d3a-21e190271bcc",
   "recordsets": [
     {
       "display-name": "DOW_DEM",
diff --git a/dowlow_2021_v2.json b/dowlow_2021_v2.virgis
similarity index 99%
rename from dowlow_2021_v2.json
rename to dowlow_2021_v2.virgis
index d2ad4c3..ec3c97d 100644
--- a/dowlow_2021_v2.json
+++ b/dowlow_2021_v2.virgis
@@ -9,9 +9,8 @@
     ]
   },
   "default_proj": "EPSG:4979",
-  "grid-scale": 1.0,
+  "map_scale": 1.0,
   "guid": "964ea21f-ee17-4710-9d3a-21e190271bcc",
-  "Guid": "964ea21f-ee17-4710-9d3a-21e190271bcc",
   "recordsets": [
     {
       "display-name": "DOW_DEM",
diff --git a/ems.json b/ems.virgis
similarity index 98%
rename from ems.json
rename to ems.virgis
index 8de177e..a5a4b42 100644
--- a/ems.json
+++ b/ems.virgis
@@ -453,7 +453,6 @@
     ]
   },
   "default_proj": "EPSG:4326",
-  "grid-scale": 1.0,
-  "guid": "aefffadf-2f9f-4233-b4e3-4e8d1fc92e5b",
-  "Guid": "aefffadf-2f9f-4233-b4e3-4e8d1fc92e5b"
+  "map_scale": 1.0,
+  "guid": "aefffadf-2f9f-4233-b4e3-4e8d1fc92e5b"
 }
\ No newline at end of file
diff --git a/ems_2.json b/ems_2.virgis
similarity index 100%
rename from ems_2.json
rename to ems_2.virgis
diff --git a/esri-tin.json b/esri-tin.virgis
similarity index 99%
rename from esri-tin.json
rename to esri-tin.virgis
index 745639c..5c9230c 100644
--- a/esri-tin.json
+++ b/esri-tin.virgis
@@ -9,9 +9,8 @@
     ]
   },
   "default_proj": "EPSG:4326",
-  "grid-scale": 1.0,
+  "map_scale": 1.0,
   "guid": "211f878e-f7fa-45d6-ab24-12fb88ea200b",
-  "Guid": "211f878e-f7fa-45d6-ab24-12fb88ea200b",
   "recordsets": [
     {
       "display-name": "Mapbox Map",
diff --git a/hope.json b/hope.virgis
similarity index 99%
rename from hope.json
rename to hope.virgis
index eb3de5e..3b85520 100644
--- a/hope.json
+++ b/hope.virgis
@@ -1256,7 +1256,6 @@
     ]
   },
   "default_proj": "EPSG:4326",
-  "grid-scale": 1.0,
-  "guid": "ee6dd7ef-a657-4ff7-bf2d-5ead63198073",
-  "Guid": "ee6dd7ef-a657-4ff7-bf2d-5ead63198073"
+  "map_scale": 1.0,
+  "guid": "ee6dd7ef-a657-4ff7-bf2d-5ead63198073"
 }
\ No newline at end of file
diff --git a/ksa-test.json b/ksa-test.virgis
similarity index 99%
rename from ksa-test.json
rename to ksa-test.virgis
index fb9ab6f..217ac29 100644
--- a/ksa-test.json
+++ b/ksa-test.virgis
@@ -9,7 +9,7 @@
     ]
   },
   "default_proj": "EPSG:4326",
-  "grid-scale": 1.0,
+  "map_scale": 1.0,
   "recordsets": [
     {
       "display-name": "Mapbox Map",
diff --git a/maia-geo-model.json b/maia-geo-model.virgis
similarity index 99%
rename from maia-geo-model.json
rename to maia-geo-model.virgis
index e67661d..8ed267b 100644
--- a/maia-geo-model.json
+++ b/maia-geo-model.virgis
@@ -9,7 +9,7 @@
     ]
   },
   "default_proj": "EPSG:4326",
-  "grid-scale": 1.0,
+  "map_scale": 1.0,
   "recordsets": [
     {
       "display-name": "Mapbox Map",
diff --git a/malta.json b/malta.virgis
similarity index 98%
rename from malta.json
rename to malta.virgis
index 5aa7a6d..faed561 100644
--- a/malta.json
+++ b/malta.virgis
@@ -8,18 +8,8 @@
       51.2750872
     ]
   },
-  "grid-scale": 1.0,
-  "scale": 1,
+  "map_scale": 1.0,
   "default_proj": "EPSG:4326",
-  "cameras": [
-    {
-      "type": "Point",
-      "coordinates": [
-        1.476434,
-        51.2750872
-      ]
-    }
-  ],
   "recordsets": [
     {
       "display-name": "Mapbox Map",
diff --git a/mega-ripple.json b/mega-ripple.virgis
similarity index 91%
rename from mega-ripple.json
rename to mega-ripple.virgis
index b6b149c..d82cb96 100644
--- a/mega-ripple.json
+++ b/mega-ripple.virgis
@@ -8,45 +8,8 @@
       51.377473
     ]
   },
-  "scales": [
-    0.9942968,
-    1.0,
-    1.0,
-    1.0
-  ],
   "default_proj": "EPSG:4326",
-  "grid-scale": 1.0,
-  "cameras": [
-    {
-      "type": "Point",
-      "coordinates": [
-        -3.123960448156622,
-        51.37777483821729,
-        12.410013198852539
-      ]
-    },
-    {
-      "type": "Point",
-      "coordinates": [
-        -3.121286,
-        51.377473
-      ]
-    },
-    {
-      "type": "Point",
-      "coordinates": [
-        -3.121286,
-        51.377473
-      ]
-    },
-    {
-      "type": "Point",
-      "coordinates": [
-        -3.121286,
-        51.377473
-      ]
-    }
-  ],
+  "map_scale": 1.0,
   "recordsets": [
     {
       "display-name": "SP01",
diff --git a/outline-test-1.json b/outline-test-1.virgis
similarity index 85%
rename from outline-test-1.json
rename to outline-test-1.virgis
index 07b3165..b1ed06a 100644
--- a/outline-test-1.json
+++ b/outline-test-1.virgis
@@ -8,45 +8,8 @@
       33.79685
     ]
   },
-  "scales": [
-    10.4000006,
-    1.0,
-    1.0,
-    1.0
-  ],
   "default_proj": "EPSG:4326",
-  "grid-scale": 1.0,
-  "cameras": [
-    {
-      "type": "Point",
-      "coordinates": [
-        -112.08026087098153,
-        33.79682714073649,
-        563.7014770507812
-      ]
-    },
-    {
-      "type": "Point",
-      "coordinates": [
-        -112.0803,
-        33.79685
-      ]
-    },
-    {
-      "type": "Point",
-      "coordinates": [
-        -112.0803,
-        33.79685
-      ]
-    },
-    {
-      "type": "Point",
-      "coordinates": [
-        -112.0803,
-        33.79685
-      ]
-    }
-  ],
+  "map_scale": 1.0,
   "recordsets": [
     {
       "display-name": "result set",
diff --git a/pdal-test.json b/pdal-test.virgis
similarity index 97%
rename from pdal-test.json
rename to pdal-test.virgis
index 05b261b..15b33ee 100644
--- a/pdal-test.json
+++ b/pdal-test.virgis
@@ -7,18 +7,8 @@
       44.05625087230097
     ]
   },
-  "grid-scale": 1,
-  "scale": 1,
+  "map_scale": 1.0,
   "default_proj": "EPSG:4979",
-  "cameras": [
-    {
-      "type": "Point",
-      "coordinates": [
-        -123.06875738051822,
-        44.05625087230097
-      ]
-    }
-  ],
   "version": "Runette:2.0.0",
   "recordsets": [
     {
diff --git a/permian-block.json b/permian-block.virgis
similarity index 96%
rename from permian-block.json
rename to permian-block.virgis
index 7d9f62f..a287e53 100644
--- a/permian-block.json
+++ b/permian-block.virgis
@@ -170,7 +170,6 @@
     ]
   },
   "default_proj": "EPSG:4326",
-  "grid-scale": 1.0,
-  "guid": "cfc4d6f0-75d9-4c8e-9afa-af1866f99577",
-  "Guid": "cfc4d6f0-75d9-4c8e-9afa-af1866f99577"
+  "map_scale": 1.0,
+  "guid": "cfc4d6f0-75d9-4c8e-9afa-af1866f99577"
 }
\ No newline at end of file
diff --git a/sandwich.json b/sandwich.virgis
similarity index 98%
rename from sandwich.json
rename to sandwich.virgis
index ec9d430..977f5c7 100644
--- a/sandwich.json
+++ b/sandwich.virgis
@@ -517,7 +517,6 @@
     ]
   },
   "default_proj": "EPSG:4326",
-  "grid-scale": 1.0,
-  "guid": "482cfb33-6d30-4ede-aa9e-cba4b81c1181",
-  "Guid": "482cfb33-6d30-4ede-aa9e-cba4b81c1181"
+  "map_scale": 1.0,
+  "guid": "482cfb33-6d30-4ede-aa9e-cba4b81c1181"
 }
\ No newline at end of file
diff --git a/teapot.json b/teapot.virgis
similarity index 95%
rename from teapot.json
rename to teapot.virgis
index dcbc9ef..10b08aa 100644
--- a/teapot.json
+++ b/teapot.virgis
@@ -125,7 +125,6 @@
       ]
     },
     "default_proj": "EPSG:4326",
-    "grid-scale": 1.0,
-    "guid": "5fd207c7-550c-43e9-b8b9-9233a8f0187d",
-    "Guid": "5fd207c7-550c-43e9-b8b9-9233a8f0187d"
+    "map_scale": 1.0,
+    "guid": "5fd207c7-550c-43e9-b8b9-9233a8f0187d"
   }
\ No newline at end of file
diff --git a/temperature.json b/temperature.virgis
similarity index 52%
rename from temperature.json
rename to temperature.virgis
index 43465c3..72d853e 100644
--- a/temperature.json
+++ b/temperature.virgis
@@ -181,7 +181,98 @@
                 "colorinterp": {}
                 }
             }
-        }
+        },
+        {
+          "name": "Trend Area",
+          "transform": {
+            "translate": [
+              0.0,
+              0.0,
+              1.0
+            ],
+            "rotate": [
+              0.0,
+              0.0,
+              0.0,
+              1.0
+            ],
+            "scale": [
+              1.0,
+              1.0,
+              1.0
+            ]
+          },
+          "representation": "Area",
+          "source_table": null,
+          "x_range": "index",
+          "z_range": "Annual mean temperature (trend)",
+          "y_range": null,
+          "label_range": null,
+          "units": {
+            "line": {
+                "texture-image": "",
+                "color": [
+                  0.2125,
+                  0.1,
+                  1.0,
+                  1.0
+                ],
+                "transform": {
+                  "translate": [
+                    0.0,
+                    0.0,
+                    0.0
+                  ],
+                  "rotate": [
+                    0.0,
+                    0.0,
+                    0.0,
+                    1.0
+                  ],
+                  "scale": [
+                    0.1,
+                    0.1,
+                    0.1
+                  ]
+                },
+                "label": "",
+                "shape": "Cuboid",
+                "color-mode": "SinglebandGrey",
+                "colorinterp": {}
+              },
+          "point": {
+              "texture-image": "",
+              "color": [
+              0.2125,
+              1.0,
+              1.0,
+              1.0
+              ],
+              "transform": {
+              "translate": [
+                  0.0,
+                  0.0,
+                  0.0
+              ],
+              "rotate": [
+                  0.0,
+                  0.0,
+                  0.0,
+                  1.0
+              ],
+              "scale": [
+                  0.1,
+                  0.1,
+                  0.1
+              ]
+              },
+              "label": "",
+              "shape": "Spheroid",
+              "color-mode": "SinglebandGrey",
+              "colorinterp": {}
+              }
+          }
+      }
       ],
       "id": "001",
       "display-name": "Temperature Data",
@@ -204,6 +295,120 @@
           1.0
         ]
       }
+    },
+    {
+      "datatype": "CSV",
+      "source": "../test_data/teapot.csv",
+      "properties": {
+        "dem": null,
+        "header-string": null,
+        "filter": null,
+        "bbox": null,
+        "mapscale": 0,
+        "map_size": 0,
+        "image_folder": null,
+        "bh-data": {
+          "x-field": null,
+          "y-field": null,
+          "z-field": null,
+          "id-field": null,
+          "inc-field": null,
+          "azi-field": null,
+          "from-field": null,
+          "to-field": null,
+          "data-field": null,
+          "data-source": null,
+          "log-id-field": null,
+          "legend": null,
+          "eoh-field": null
+        },
+        "hide-sublayers": null
+      },
+      "proj4": "",
+      "units": {},
+      "data_units": [
+        {
+          "name": "Teapot",
+          "transform": {
+            "translate": [
+              0.0,
+              0.0,
+              0.0
+            ],
+            "rotate": [
+              0.0,
+              0.0,
+              0.0,
+              1.0
+            ],
+            "scale": [
+              1.0,
+              1.0,
+              1.0
+            ]
+          },
+          "representation": "Points",
+          "source_table": null,
+          "x_range": "X",
+          "z_range": "Y",
+          "y_range": "Z",
+          "label_range": null,
+          "units": {
+            "point": {
+                "texture-image": "",
+                "color": [
+                  0.2125,
+                  0.1,
+                  1.0,
+                  1.0
+                ],
+                "transform": {
+                  "translate": [
+                    0.0,
+                    0.0,
+                    0.0
+                  ],
+                  "rotate": [
+                    0.0,
+                    0.0,
+                    0.0,
+                    1.0
+                  ],
+                  "scale": [
+                    0.1,
+                    0.1,
+                    0.1
+                  ]
+                },
+                "label": "",
+                "shape": "Spheroid",
+                "color-mode": "SinglebandGrey",
+                "colorinterp": {}
+              }
+          }
+        }
+      ],
+      "id": "002",
+      "display-name": "Teapot Data",
+      "position": null,
+      "transform": {
+        "translate": [
+          0.0,
+          0.0,
+          0.0
+        ],
+        "rotate": [
+          0.0,
+          0.0,
+          0.0,
+          1.0
+        ],
+        "scale": [
+          1.0,
+          1.0,
+          1.0
+        ]
+      }
     }
   ],
   "version": "Runette:2.0.0",
@@ -216,7 +421,6 @@
     ]
   },
   "default_proj": "EPSG:4326",
-  "grid-scale": 1.0,
+  "map_scale": 1.0,
   "guid": "5fd207c7-550c-43e9-b8b9-9233a8f0187d",
-  "Guid": "5fd207c7-550c-43e9-b8b9-9233a8f0187d"
 }
\ No newline at end of file
diff --git a/test-gpr.json b/test-gpr.virgis
similarity index 99%
rename from test-gpr.json
rename to test-gpr.virgis
index cb3e8c5..9ab173a 100644
--- a/test-gpr.json
+++ b/test-gpr.virgis
@@ -9,7 +9,7 @@
     ]
   },
   "default_proj": "EPSG:4979",
-  "grid-scale": 1.0,
+  "map_scale": 1.0,
   "recordsets": [
     {
       "display-name": "Mapbox Map",
diff --git a/test.json b/test.virgis
similarity index 97%
rename from test.json
rename to test.virgis
index 798b76f..7a371a0 100644
--- a/test.json
+++ b/test.virgis
@@ -9,9 +9,8 @@
     ]
   },
   "default_proj": "EPSG:4979",
-  "grid-scale": 1.0,
+  "map_scale": 1.0,
   "guid": "2256a23c-b013-4b97-9afe-6e3a4467c0af",
-  "Guid": "2256a23c-b013-4b97-9afe-6e3a4467c0af",
   "recordsets": [
     {
       "display-name": "Mapbox Map",
diff --git a/uwis_test.json b/uwis_test.virgis
similarity index 99%
rename from uwis_test.json
rename to uwis_test.virgis
index fbf00a9..5737f3c 100644
--- a/uwis_test.json
+++ b/uwis_test.virgis
@@ -9,7 +9,7 @@
     ]
   },
   "default_proj": "EPSG:4326",
-  "grid-scale": 1.0,
+  "map_scale": 1.0,
   "recordsets": [
     {
       "display-name": "MapBox Map",
diff --git a/uwis_test2.json b/uwis_test2.virgis
similarity index 99%
rename from uwis_test2.json
rename to uwis_test2.virgis
index 3e50336..bccfede 100644
--- a/uwis_test2.json
+++ b/uwis_test2.virgis
@@ -9,7 +9,7 @@
     ]
   },
   "default_proj": "EPSG:4326",
-  "grid-scale": 1.0,
+  "map_scale": 1.0,
   "recordsets": [
     {
       "display-name": "GeoJSON File",