try to make cartesian as default coordinates

src/core/module/ModuleManager.cpp

@@ -64,8 +64,9 @@ void ModuleManager::load_detectors() {
 
         LOG_PROGRESS(STATUS, "DET_LOAD_LOOP") << "Loading detector " << name;
         // @to do: other detector types, e.g., ATLAS endcap strip detector
+        // default coordinate is cartesian coordinate
         std::shared_ptr<Detector> detector;
-        if(coordinate == "cartesian")
+        if(coordinate == "cartesian" || coordinate == "")
             detector = std::make_shared<PlanarDetector>(detector_section);
 
         // Check if we already found a reference plane:

testing/geometries/geometry_mimosa26_telescope.conf

@@ -9,7 +9,6 @@ time_resolution = 1s
 material_budget = 0.0
 type = "TLU"
 role = "auxiliary"
-coordinates = "cartesian" 
 
 [MIMOSA26_0]
 mask_file = "maskfiles/mask_MIMOSA26_0.txt"
@@ -22,7 +21,6 @@ spatial_resolution = 4um,4um
 time_resolution = 230us
 material_budget = 0.00075
 type = "MIMOSA26"
-coordinates = "cartesian" 
 
 [MIMOSA26_1]
 mask_file = "maskfiles/mask_MIMOSA26_1.txt"
@@ -35,7 +33,6 @@ spatial_resolution = 4um,4um
 time_resolution = 230us
 material_budget = 0.00075
 type = "MIMOSA26"
-coordinates = "cartesian" 
 
 [MIMOSA26_2]
 mask_file = "maskfiles/mask_MIMOSA26_2.txt"
@@ -49,7 +46,6 @@ time_resolution = 230us
 material_budget = 0.00075
 role = "reference"
 type = "MIMOSA26"
-coordinates = "cartesian" 
 
 [MIMOSA26_3]
 mask_file = "maskfiles/mask_MIMOSA26_3.txt"
@@ -62,7 +58,6 @@ spatial_resolution = 4um,4um
 time_resolution = 230us
 material_budget = 0.00075
 type = "MIMOSA26"
-coordinates = "cartesian" 
 
 [MIMOSA26_4]
 mask_file = "maskfiles/mask_MIMOSA26_4.txt"
@@ -75,7 +70,6 @@ spatial_resolution = 4um,4um
 time_resolution = 230us
 material_budget = 0.00075
 type = "MIMOSA26"
-coordinates = "cartesian" 
 
 [MIMOSA26_5]
 mask_file = "maskfiles/mask_MIMOSA26_5.txt"
@@ -88,7 +82,6 @@ spatial_resolution = 4um,4um
 time_resolution = 230us
 material_budget = 0.00075
 type = "MIMOSA26"
-coordinates = "cartesian" 
 
 [Timepix3_0]
 number_of_pixels = 256,256
@@ -101,4 +94,3 @@ time_resolution = 20ns
 material_budget = 0.01068
 role = "dut"
 type = "Timepix3"
-coordinates = "cartesian"