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--- topodroidtherion [2019/02/10 09:36]
brucemutton [TopoDroid] rationalise part 3
+++ topodroidtherion [2019/02/10 09:54] (current)
brucemutton [TopoDroid] formatting
@@ Line 30: / Line 30: @@
   - Set the **Stations Policy**.  This sets up the workflow that TopoDroid expects the Disto person to use when they arrive at a new survey station, and allows TopoDroid to name stations automatically. For example, ‘splays, forward leg’ matches the default PocketTopo workflow where first the splays are taken at a new station, then the forward survey leg is taken using three shots in a row.  \\ From the TopoDroid Main Window, navigate to menu SETTINGS – SURVEY DATA, and make your selection.
   - It is recommended that you keep the **Loop closure** set to its default setting of ‘none’. (To check this, requires activity level set to expert, navigate to menu SETTINGS – SURVEY DATA – SHOT DATA – Loop closure).  \\ It is better to be able to see loop misclosures in your field notes, save loop closure for Therion.
-  - Set the **line drawing style**.  This has perhaps the most significant effect on the size and ease of handling and editing of your exported th2 files in XTherion.  Navigate to menu SETTINGS – SKETCHING – LINES – line style, and select normal, coarse or bezier. \\ There are a number of approaches, which entail different compromises; \\ //__Fine/normal/coarse__// all generate exported lines that have straight segments with no curvature. They tend to produce large files with very many line points that are difficult for XTherion to handle, and are difficult to edit once in XTherion, just due to the sheer number of points.  You can reduce the number of points per line before export from TopoDroid with the decimation feature, or after export with the ‘simplify line’ feature in XTherion.  Line segments are straight so it can look significantly different to your original sketch.  XTherions ‘convert to curve’ feature can help here though. \\ //__Bezier__// stores lines in the same way that smoothed lines are stored in Therion.  Therefore you get curved/smoothed lines with an optimum (small) number of points that is easy for XTherion to load and easy(er) for you to edit.  However if you erase part of a bezier line in TopoDroid, then it may erase a larger chunk than you would like.  You can store lines of all four types in the same sketch file, but that is probably an awkward workflow. \\ There are also two settings that affect the Bezier line creation, ‘interpolation accuracy’ [1.0] and ‘bezier corner threshold’ [20].
+  - Set the **line drawing style**.  This has perhaps the most significant effect on the size and ease of handling and editing of your exported th2 files in XTherion.  Navigate to menu SETTINGS – SKETCHING – LINES – line style, and select normal, coarse or bezier. \\ There are a number of approaches, which entail different compromises; \\  - //__Fine/normal/coarse__// all generate exported lines that have straight segments with no curvature. They tend to produce large files with very many line points that are difficult for XTherion to handle, and are difficult to edit once in XTherion, just due to the sheer number of points.  You can reduce the number of points per line before export from TopoDroid with the decimation feature, or after export with the ‘simplify line’ feature in XTherion.  Line segments are straight so it can look significantly different to your original sketch.  XTherions ‘convert to curve’ feature can help here though. \\ - //__Bezier__// stores lines in the same way that smoothed lines are stored in Therion.  Therefore you get curved/smoothed lines with an optimum (small) number of points that is easy for XTherion to load and easy(er) for you to edit.  However if you erase part of a bezier line in TopoDroid, then it may erase a larger chunk than you would like.  You can store lines of all four types in the same sketch file, but that is probably an awkward workflow. \\ There are also two settings that affect the Bezier line creation, ‘interpolation accuracy’ [1.0] and ‘bezier corner threshold’ [20].
   - **Sketch (origin) station** When creating a new sketch, TopoDroid requests a 'station'. This is the origin station that is placed at (0,0) on the drawing page. You can read about this in the 'in-App help'.  From the Help menu select the help book icon, then the .=== icon, then //15Index.SurveySketch.NewSketch// for details.  Choosing the same 'station' for all your sketches may allow them to be aligned properly in XTherion (in future). \\ You can force TopoDroid to always suggest the same origin station.  From the TopoDroid Survey Data Window, navigate to menu SETTINGS - Sketch Origin and tick 'Fixed sketch origin'.
   - Surveys can be set up to have **‘station’ cross section sketches** either ‘private’ (specific to the sketch it is created in) or ‘shared’ (between all sketches in the survey session).  This choice is made on creation of the survey, and it cannot be changed once the survey has been created.  \\ This does not apply to ‘leg’ cross sections.  These are always ''private/shared (?which?).  [not sure if this is particularly relevant to how TopoDroid interfaces with Therion]''