Timeline for Adding lat/lon to multiple shapefiles
Current License: CC BY-SA 4.0
29 events
| when toggle format | what | by | license | comment | |
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| Mar 21, 2019 at 6:00 | history | tweeted | twitter.com/StackGIS/status/1108609302267396096 | ||
| Mar 21, 2019 at 5:04 | answer | added | Simbamangu | timeline score: 1 | |
| Mar 8, 2019 at 16:44 | comment | added | Jeri | @Spacedman I see your point. I believe that this may be a small enough scale that using x-y would work. | |
| Mar 8, 2019 at 7:46 | comment | added | Spacedman | If the points are in true lat-long coordinates and you want to do everything on a sphere then a simple translation (change in lat-long) isn't appropriate because lat-long doesn't work like that (try adding 20 degrees to 75 degrees N). You can rotate in 3d a feature on the sphere to a new location but that can also result in a rotation of the feature about itself. Consider shifting Cuba to the north pole - which way do you point it? On a small scale its much easier to use projected (x-y instead of lat-long) coordinates. Is that appropriate with you here? | |
| Mar 7, 2019 at 23:57 | comment | added | Jeri | @Spacedman yes I've tried this in ArcGIS but ran into the issue of figuring out the distance needed to move to be "centered" on the point because they weren't projected and changing the projection did not work. Is this (the distance) possible to calculate in R? | |
| Mar 7, 2019 at 23:30 | comment | added | Spacedman | EG if your KUD was a set of perfect circular rings, your output shapefiles would be the same perfect circular rings but centred on each point in that other data set. | |
| Mar 7, 2019 at 23:29 | comment | added | Spacedman |
Okay, think we're getting there. So do you know the coordinate that the shapefile is based on already? If that is (x0,y0) then its a case of translating the shapefile data by (x_i-x0, y_i-y0) for each of your N points at location (x_i, y_i) to produce N shapefiles that only differ by having the shape shifted. Yup?
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| Mar 7, 2019 at 21:48 | history | edited | Jeri | CC BY-SA 4.0 |
changed image 1
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| Mar 7, 2019 at 21:41 | history | edited | Jeri | CC BY-SA 4.0 |
updated image; clarified question
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| Mar 7, 2019 at 21:13 | comment | added | Jeri | @Spacedman I need the shapefiles to all have different georeferences that correlate to the lat/lon for each data point in the data.table. | |
| Mar 7, 2019 at 21:07 | comment | added | Spacedman | That doesnt make sense. Shapefiles aren't "centred" around anything, they store the geometry of a set of features. Do you really mean you are trying to draw maps centred at each point? Or you want to create a new set of shapefiles that are cropped from your KUD shapefile? If so, how far round each of the points do you want it? | |
| Mar 7, 2019 at 21:05 | history | edited | Jeri | CC BY-SA 4.0 |
clarified question
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| Mar 7, 2019 at 21:00 | comment | added | Jeri | @Spacedman Yes I need to create identical copies of this KUD shapefile but I need each copy to have a different georeference point (lat/lon). For each dot in the picture above there needs to be the KUD shapefile centered around it. | |
| Mar 7, 2019 at 20:50 | comment | added | Spacedman | So you want to create some identical copies of this KUD shapefile? That's the only sense I can make of your question at this point. What's the KUD shapefile called? Where do you want the copies put? | |
| Mar 7, 2019 at 17:10 | history | edited | Jeri | CC BY-SA 4.0 |
added clarificaiton
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| Mar 7, 2019 at 17:09 | comment | added | Jeri | @csk I want to create a copy of the existing KUD shapefile for each colony location. Edited question to clarify. Thank you! | |
| Mar 7, 2019 at 16:58 | comment | added | csk | Are you planning to generate a unique KUD for each colony location? Or do you want to create a copy of the existing KUD shapefile for each colony location? The second option should be simple to implement, but it doesn't sound correct. Wouldn't the kernal utilization density be unique for each colony? Please edit your question to clarify. | |
| Mar 7, 2019 at 15:20 | history | edited | Jeri | CC BY-SA 4.0 |
clarified questions and improved formatting
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| Mar 7, 2019 at 15:15 | review | Close votes | |||
| Mar 7, 2019 at 17:17 | |||||
| Mar 7, 2019 at 15:04 | comment | added | Jeri | @JepsonNomad each data point represents a separate colony location | |
| Mar 7, 2019 at 15:03 | comment | added | Jeri | @Simbamangu I've used other movement data to create a KUD for bird movement during breeding. Now I want to apply this same KUD to all of the colony locations for that species of bird. Essentially need to apply different lat/lon coordinates to a shapefile and duplicate it for every colony data point. | |
| Mar 7, 2019 at 6:38 | comment | added | Simbamangu | Not sure what you mean by creating a KUD for each data point - a KUD is created from multiple points? Do you need a KUD for each tag in the CSV (i.e. from multiple points associated with a given ID)? | |
| Mar 7, 2019 at 4:11 | comment | added | JepsonNomad | Is the colony this whole band of points, or are there several colonies represented here? | |
| Mar 7, 2019 at 1:30 | history | edited | Jeri | CC BY-SA 4.0 |
added 299 characters in body
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| Mar 7, 2019 at 1:26 | comment | added | Jeri | @Simbamangu thanks! I've edited to add requested details. | |
| Mar 7, 2019 at 1:15 | history | edited | Jeri | CC BY-SA 4.0 |
Added image and description for clarity
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| Mar 7, 2019 at 1:03 | comment | added | Simbamangu | Welcome to GISse! Could you click "edit" and update your question with more details? What does KUD mean? What format are your data in (fields, etc) | |
| Mar 7, 2019 at 0:55 | review | First posts | |||
| Mar 7, 2019 at 2:59 | |||||
| Mar 7, 2019 at 0:53 | history | asked | Jeri | CC BY-SA 4.0 |