Digital Terrain Creator - Revision history

Francisco: /* CreateBathymetry.dat file */

2014-08-18T12:28:53Z

‎CreateBathymetry.dat file

Davidbrito: /* Requirements */

2014-03-14T17:47:34Z

‎Requirements

Davidbrito: /* Requirements */

2014-03-14T17:47:15Z

‎Requirements

Davidbrito: /* Requirements */

2014-03-14T17:46:37Z

‎Requirements

Davidbrito: /* River/Channel Dredging */

2014-03-14T17:45:47Z

‎River/Channel Dredging

Davidbrito: /* CreateBathymetry.dat file */

2014-01-23T09:22:08Z

‎CreateBathymetry.dat file

Davidbrito: /* River/Channel Dredging */

2014-01-23T03:20:49Z

‎River/Channel Dredging

Davidbrito: /* Data File Example */

2014-01-23T03:13:23Z

‎Data File Example

Davidbrito: /* River/Channel Dredging */

2013-12-23T15:49:31Z

‎River/Channel Dredging

Davidbrito: /* Sections Dredging */

2013-12-21T20:23:35Z

‎Sections Dredging

@@ Line 39: / Line 39: @@
   !Here are the interpolation method options
-  POINTS_FOR_INTERPOLATION  : 3
+  POINTS_FOR_INTERPOLATION  : 3         !Method to select base points for interpolation 1-AllPoints; 2-GridCellCenterPoints; 3-PointsInsideGridLimits
   EXPAND_GRID_LIMITS        : 1
   GRID_LIMITS_PERCENTAGE    : 0.25

@@ Line 80: / Line 80: @@
 * an area of original bathymetry to apply the dredging - this can be obtained in GUI by creating a polygon.
 * points collection where each pair defines section begin and end (z is not read if SECTION_MIDDLE_POINT_METHOD : 1 or is read and defines middle point Z if SECTION_MIDDLE_POINT_METHOD : 2) - this collection can be obtained in GUI by creating points with any Z (it will be computed).
-  Remember: the first two consecutive points need to belong to one section (one for section start and the other for end) and the next two points for the next section and so on.
+  Remember: the first two consecutive points need to belong to one section (one for section start and the other for end) and the next two
   Remember: the points defining section start and end must be outside the polygon area.
   Remember: if using the option to create more margin points from original points then all the first points of each pair needs to belong
-to one margin and the second points of each pair need to belong to the other.
+ to one margin and the second points of each pair need to belong to the other.
 * middle point height (or depth) in relation to section start point  - read if SECTION_MIDDLE_POINT_METHOD : 1.
 * section shape (if linear the section will be "V" shape, if root will be "U" shape and if power will be "hearts" with flat plain and fast decrease to section center).

@@ Line 82: / Line 82: @@
   Remember: the first two consecutive points need to belong to one section (one for section start and the other for end) and the next two points for the next section and so on.
   Remember: the points defining section start and end must be outside the polygon area.
-  Remember: if using the option to create more margin points from original points then all the first points of each pair needs to belong to one margin and the second points of each pair need to belong to the other.
+  Remember: if using the option to create more margin points from original points then all the first points of each pair needs to belong
 * middle point height (or depth) in relation to section start point  - read if SECTION_MIDDLE_POINT_METHOD : 1.
 * section shape (if linear the section will be "V" shape, if root will be "U" shape and if power will be "hearts" with flat plain and fast decrease to section center).

@@ Line 82: / Line 82: @@
   Remember: the first two consecutive points need to belong to one section (one for section start and the other for end) and the next two points for the next section and so on.
   Remember: the points defining section start and end must be outside the polygon area.
 * middle point height (or depth) in relation to section start point  - read if SECTION_MIDDLE_POINT_METHOD : 1.
 * section shape (if linear the section will be "V" shape, if root will be "U" shape and if power will be "hearts" with flat plain and fast decrease to section center).
 === Assumptions ===

@@ Line 72: / Line 72: @@
 Digital Terrain creator can also dredge a part of the DTM creating sections and using triangulation to fill between sections.
 For this the user provides the bathymetry, the area to dredge, the points collection with section begin and end and the program does the rest (creating points to define the sections and interpolating in between sections).
 === Requirements ===
@@ Line 82: / Line 84: @@
 * middle point height (or depth) in relation to section start point  - read if SECTION_MIDDLE_POINT_METHOD : 1.
 * section shape (if linear the section will be "V" shape, if root will be "U" shape and if power will be "hearts" with flat plain and fast decrease to section center).
 === Assumptions ===
@@ Line 116: / Line 119: @@
   SECTION_XYZ_FILE            : FinalSections.xyz
-  !areas to select where to triangulate (if triangulation active)
+  CREATE_MARGIN_POINTS   : 1                    !1 - compute more margin points from original xyz points (interpolating)
   <BeginAreaFiles>
   SelectedArea.xy

@@ Line 73: / Line 73: @@
 * an original bathymetry (to be dredged).
 * an area of original bathymetry to apply the dredging - this can be obtained in GUI by creating a polygon.
-* points collection where each pair defines section begin and end (z is undefined) - this collection can be obtained in GUI by creating points with any Z (it will be computed).
+* points collection where each pair defines section begin and end (z is not read if SECTION_MIDDLE_POINT_METHOD : 1 or is read and defines middle point Z if SECTION_MIDDLE_POINT_METHOD : 2) - this collection can be obtained in GUI by creating points with any Z (it will be computed).
   Remember: the first two consecutive points need to belong to one section (one for section start and the other for end) and the next two points for the next section and so on.
   Remember: the points defining section start and end must be outside the polygon area.
-* middle point height (or depth) in relation to section start point.
+* middle point height (or depth) in relation to section start point  - read if SECTION_MIDDLE_POINT_METHOD : 1.
 * section shape (if linear the section will be "V" shape, if root will be "U" shape and if power will be "hearts" with flat plain and fast decrease to section center).
 === Assumptions ===
-The method assumes that the lower point of the section is exactly at middle between start and end and uses a unique value for all sections of section height (the height of the middle point in relation to first point or section start).
+The method assumes that the lower point of the section is exactly at middle between start and end and uses a unique value for all sections (the height of the middle point in relation to first point or section start) if SECTION_MIDDLE_POINT_METHOD : 1. If the user wants to give middle point Z (if SECTION_MIDDLE_POINT_METHOD : 2) define it in GUI when creating the file (define Z of first point of each pair) or after creation, editing xyz file.
 === Process ===
 The algorithm starts by finding for each XYZ point (sections start and end) the bathymetry level by searching in the original bathymetry file.
-In the next step, the points needed to define each section are added and elevation computed (using section start and end elevation, middle point depth and section shape). In this step a xyz file with the original points (section begin and end) and the added points is outputed.
+In the next step, the points needed to define each section are added and elevation computed (using section start and end elevation, middle point depth (or level) and section shape). In this step a xyz file with the original points (section begin and end) and the added points is outputed.
 In the next step, if interpolation is connected, the defined area for dredging is prepared.

@@ Line 104: / Line 104: @@
   SECTION_COMPUTE             : 1               !1 - compute sections from given xyz points (pairs of section begin and end)
-  SECTION_HEIGHT              : 3.0             !section middle height or depth (in reference to first section point z)
+ SECTION_MIDDLE_POINT_METHOD : 1               !1 - use middle height; 2 - use Z in original xyz collection
   SECTION_INTERPOL_TYPE       : 3               !1 - linear; 2 - power; 3 - root
   SECTION_INTERPOL_ORDER      : 2               !power or root order (2 - power of 2 or squared root)

@@ Line 65: / Line 65: @@
   <EndGridDataInfo>
-== Sections Dredging ==
+== River/Channel Dredging ==
-The dredge a river the algorithm needs:
+To dredge a river the algorithm needs:
 * an original bathymetry (to be dredged).
 * an area of original bathymetry to apply the dredging - this can be obtained in GUI by creating a polygon.