Why does DotSpatial return NaN for point reprojection? Planned maintenance scheduled April...
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Why does DotSpatial return NaN for point reprojection?
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From the master branch and examples @ https://github.com/DotSpatial/DotSpatial the following fills the xy array with NaN but we expect 1755668,5922511
Dim x As Double() = {2666109}
Dim y As Double() = {6484213}
Dim z(x.Length - 1) As Double
Dim xy(2 * x.Length - 1) As Double
Dim ixy As Integer = 0
For i As Integer = 0 To x.Length - 1
xy(ixy) = x(i)
xy(ixy + 1) = y(i)
z(i) = 0
ixy += 2
Next
Dim srcsys As ProjectionInfo = ProjectionInfo.FromEpsgCode(27200)
Dim destsys As ProjectionInfo = ProjectionInfo.FromEpsgCode(2193)
Reproject.ReprojectPoints(xy:=xy,
z:=z,
source:=srcsys,
dest:=destsys,
startIndex:=0,
numPoints:=x.Length)
coordinate-system .net vb.net dotspatial
asked Jun 27 '17 at 5:45
ajayelajayel
188118
bumped to the homepage by Community♦ 8 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
From the master branch and examples @ https://github.com/DotSpatial/DotSpatial the following fills the xy array with NaN but we expect 1755668,5922511
Dim x As Double() = {2666109}
Dim y As Double() = {6484213}
Dim z(x.Length - 1) As Double
Dim xy(2 * x.Length - 1) As Double
Dim ixy As Integer = 0
For i As Integer = 0 To x.Length - 1
xy(ixy) = x(i)
xy(ixy + 1) = y(i)
z(i) = 0
ixy += 2
Next
Dim srcsys As ProjectionInfo = ProjectionInfo.FromEpsgCode(27200)
Dim destsys As ProjectionInfo = ProjectionInfo.FromEpsgCode(2193)
Reproject.ReprojectPoints(xy:=xy,
z:=z,
source:=srcsys,
dest:=destsys,
startIndex:=0,
numPoints:=x.Length)
coordinate-system .net vb.net dotspatial
asked Jun 27 '17 at 5:45
ajayelajayel
188118
bumped to the homepage by Community♦ 8 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
seems this is specific to New Zealand Map Grid (EPSG:27200) re projections (other projections work OK). I've posted a GitHub issue and will try to debug the source code,
– ajayel
Jun 27 '17 at 19:42
add a comment |
From the master branch and examples @ https://github.com/DotSpatial/DotSpatial the following fills the xy array with NaN but we expect 1755668,5922511
Dim x As Double() = {2666109}
Dim y As Double() = {6484213}
Dim z(x.Length - 1) As Double
Dim xy(2 * x.Length - 1) As Double
Dim ixy As Integer = 0
For i As Integer = 0 To x.Length - 1
xy(ixy) = x(i)
xy(ixy + 1) = y(i)
z(i) = 0
ixy += 2
Next
Dim srcsys As ProjectionInfo = ProjectionInfo.FromEpsgCode(27200)
Dim destsys As ProjectionInfo = ProjectionInfo.FromEpsgCode(2193)
Reproject.ReprojectPoints(xy:=xy,
z:=z,
source:=srcsys,
dest:=destsys,
startIndex:=0,
numPoints:=x.Length)
coordinate-system .net vb.net dotspatial
asked Jun 27 '17 at 5:45
ajayelajayel
188118
From the master branch and examples @ https://github.com/DotSpatial/DotSpatial the following fills the xy array with NaN but we expect 1755668,5922511
Dim x As Double() = {2666109}
Dim y As Double() = {6484213}
Dim z(x.Length - 1) As Double
Dim xy(2 * x.Length - 1) As Double
Dim ixy As Integer = 0
For i As Integer = 0 To x.Length - 1
xy(ixy) = x(i)
xy(ixy + 1) = y(i)
z(i) = 0
ixy += 2
Next
Dim srcsys As ProjectionInfo = ProjectionInfo.FromEpsgCode(27200)
Dim destsys As ProjectionInfo = ProjectionInfo.FromEpsgCode(2193)
Reproject.ReprojectPoints(xy:=xy,
z:=z,
source:=srcsys,
dest:=destsys,
startIndex:=0,
numPoints:=x.Length)
coordinate-system .net vb.net dotspatial
coordinate-system .net vb.net dotspatial
asked Jun 27 '17 at 5:45
ajayelajayel
188118
asked Jun 27 '17 at 5:45
ajayelajayel
188118
asked Jun 27 '17 at 5:45
ajayelajayel
188118
asked Jun 27 '17 at 5:45
ajayelajayel
188118
asked Jun 27 '17 at 5:45
ajayelajayel
188118
188118
bumped to the homepage by Community♦ 8 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
bumped to the homepage by Community♦ 8 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
seems this is specific to New Zealand Map Grid (EPSG:27200) re projections (other projections work OK). I've posted a GitHub issue and will try to debug the source code,
– ajayel
Jun 27 '17 at 19:42
add a comment |
seems this is specific to New Zealand Map Grid (EPSG:27200) re projections (other projections work OK). I've posted a GitHub issue and will try to debug the source code,
– ajayel
Jun 27 '17 at 19:42
seems this is specific to New Zealand Map Grid (EPSG:27200) re projections (other projections work OK). I've posted a GitHub issue and will try to debug the source code,
– ajayel
Jun 27 '17 at 19:42
seems this is specific to New Zealand Map Grid (EPSG:27200) re projections (other projections work OK). I've posted a GitHub issue and will try to debug the source code,
– ajayel
Jun 27 '17 at 19:42
add a comment |
2 Answers
2
active
oldest
votes
I'm not a .Net developer but I suspect that your arrays Z and XY are both initialized to length 0 (x.length - 1) when they should be length 1 (x.length) and 2 (2 * x.length) respectively. And, depending on how loops work in .Net you may not even execute the loop as it runs from 0 to 0 to fill them in so there is no error.
answered Jun 27 '17 at 8:07
Ian Turton♦Ian Turton
50.3k548119
add a comment |
I had exactly the same thing happen when using Sphere Azimuthal Equidistant http://epsg.io/53032.
(Proj.4): +proj=aeqd +lat_0=-40 +lon_0=60 +x_0=0 +y_0=0 +a=6371000 +b=6371000 +units=m +no_defs
answered Nov 15 '18 at 15:46
Tim MakinsTim Makins
114
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
I'm not a .Net developer but I suspect that your arrays Z and XY are both initialized to length 0 (x.length - 1) when they should be length 1 (x.length) and 2 (2 * x.length) respectively. And, depending on how loops work in .Net you may not even execute the loop as it runs from 0 to 0 to fill them in so there is no error.
answered Jun 27 '17 at 8:07
Ian Turton♦Ian Turton
50.3k548119
add a comment |
I'm not a .Net developer but I suspect that your arrays Z and XY are both initialized to length 0 (x.length - 1) when they should be length 1 (x.length) and 2 (2 * x.length) respectively. And, depending on how loops work in .Net you may not even execute the loop as it runs from 0 to 0 to fill them in so there is no error.
answered Jun 27 '17 at 8:07
Ian Turton♦Ian Turton
50.3k548119
add a comment |
I'm not a .Net developer but I suspect that your arrays Z and XY are both initialized to length 0 (x.length - 1) when they should be length 1 (x.length) and 2 (2 * x.length) respectively. And, depending on how loops work in .Net you may not even execute the loop as it runs from 0 to 0 to fill them in so there is no error.
answered Jun 27 '17 at 8:07
Ian Turton♦Ian Turton
50.3k548119
I'm not a .Net developer but I suspect that your arrays Z and XY are both initialized to length 0 (x.length - 1) when they should be length 1 (x.length) and 2 (2 * x.length) respectively. And, depending on how loops work in .Net you may not even execute the loop as it runs from 0 to 0 to fill them in so there is no error.
answered Jun 27 '17 at 8:07
Ian Turton♦Ian Turton
50.3k548119
answered Jun 27 '17 at 8:07
Ian Turton♦Ian Turton
50.3k548119
answered Jun 27 '17 at 8:07
Ian Turton♦Ian Turton
50.3k548119
answered Jun 27 '17 at 8:07
Ian Turton♦Ian Turton
50.3k548119
50.3k548119
add a comment |
add a comment |
I had exactly the same thing happen when using Sphere Azimuthal Equidistant http://epsg.io/53032.
(Proj.4): +proj=aeqd +lat_0=-40 +lon_0=60 +x_0=0 +y_0=0 +a=6371000 +b=6371000 +units=m +no_defs
answered Nov 15 '18 at 15:46
Tim MakinsTim Makins
114
add a comment |
I had exactly the same thing happen when using Sphere Azimuthal Equidistant http://epsg.io/53032.
(Proj.4): +proj=aeqd +lat_0=-40 +lon_0=60 +x_0=0 +y_0=0 +a=6371000 +b=6371000 +units=m +no_defs
answered Nov 15 '18 at 15:46
Tim MakinsTim Makins
114
add a comment |
I had exactly the same thing happen when using Sphere Azimuthal Equidistant http://epsg.io/53032.
(Proj.4): +proj=aeqd +lat_0=-40 +lon_0=60 +x_0=0 +y_0=0 +a=6371000 +b=6371000 +units=m +no_defs
answered Nov 15 '18 at 15:46
Tim MakinsTim Makins
114
I had exactly the same thing happen when using Sphere Azimuthal Equidistant http://epsg.io/53032.
(Proj.4): +proj=aeqd +lat_0=-40 +lon_0=60 +x_0=0 +y_0=0 +a=6371000 +b=6371000 +units=m +no_defs
answered Nov 15 '18 at 15:46
Tim MakinsTim Makins
114
answered Nov 15 '18 at 15:46
Tim MakinsTim Makins
114
answered Nov 15 '18 at 15:46
Tim MakinsTim Makins
114
answered Nov 15 '18 at 15:46
Tim MakinsTim Makins
114
114
add a comment |
add a comment |
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seems this is specific to New Zealand Map Grid (EPSG:27200) re projections (other projections work OK). I've posted a GitHub issue and will try to debug the source code,
– ajayel
Jun 27 '17 at 19:42