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dfhill

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About dfhill

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  1. If I load in a coastline file, with nodes ordered from S to N (imagine this is the west coast), then this is the correct 'direction' for an adcirc simulation (land on the right). Why, then, when I 'define domain' does the open ocean boundary (semi-circle, for example) end up on the RIGHT (i.e., on land)? I can fix this by temporarily 'reversing' the direction of the land arc. BUT, now, the land arc is going the wrong way, so if you generate a mesh and save a fort.14, it will not work. Instead, you have to re-reverse the direction of the land arc prior to mesh generation. I find these extra steps tedious. Also, is there a simple way to 'see' the direction of an arc, prior to generating a mesh (at which time arrows appear indicating arc direction)? While SMS lets you reverse arc direction, it is frustrating that one can not see the arc direction. Finally, WHEN will an 'undo' feature be built into SMS? Any timeline anticipated? Dave.
  2. I have 10.0.11. I follow the exact steps below (not on shins, though; on my own data file). I took coastline extractor data, put it into 'coast' file format, read it in, cleaned it up, and I now want to export. The steps below result in no file being saved at all. Dave.
  3. Hello, after simplifying a coastline (from raw data from coastline extractor), I wish to export as a new 'coast' file. The coverage is set to 'adcirc' and I am given the 'save as --> coast' file type option. However, when I select this option, nothing happens. No file is saved. Any tips? It is key that I am able to export a new x,y (lon, lat) file from my manipulated coastline. Thanks, D.
  4. As per the CIRP-SMS Lesson 3 tutorial. They show how to create a 'simplified coastline' by creating a new coverage and simply clicking out a coastline. But HOW does one pan the field of view while doing this?? Thanks, D. Hill.
  5. Rusty, So, can you clarify the following. If one loads in a coastline file, and a scatterset (bathy) file, and generates a mesh, how are the depth values at the boundary nodes determined? By simple extrapolation? For the most part, the boundary nodes will be 'outside' the polygon defined by the bathy nodes, so it would have to be extrapolation and not interpolation. Do you ever run into problems with the extrapolation leading to unrealistic values of depths at the boundary nodes? Thanks D.
  6. Hello, Quick question. Typically, one will download bathy data and coastline data (the latter, say, from coastline extractor). One then loads the coastline and the bathy into SMS and generates a grid (say, for use in ADCIRC). The coastline becomes part of the grid, and presumably (?) the nodes on the coastline boundary are assigned a depth of zero. Is this correct? If it is correct, is this not in error, since most coastline data describe the MHHW mark? Thank you for any replies. Dave.
  7. I have 10.0.11, and I do not get that result at all...can you please let me know how to get the update? Thanks, Dave.
  8. i just uploaded fort0k.zip. Good luck trying to figure out the problem.
  9. when i click in the white space as you suggest, there is no cad option. D.
  10. The zonal tool also fails to capture a lot of regions that meet the criterion set. for example, I have a grid of the western Atlantic / caribbean. Water depths run from negative numbers (grid cells on land) to large positive numbers (deep water). If I use the ZT to try and isolate shallow water (say where the depth is 0 - 200 m; basically the continental shelf) it works around the caribbean but fails to pick up the entire US shelf region. Bummer. My grid is some 20MB if you want to see it yourself. D.
  11. I read in a grid, and set current coords to be geographic (lat / lon) and depths in meters. If I select a number of cells, I can get area / volume of them in proper units. If I use zonal classification to, for example, create a polygon where the depth is below or above a certain value, and then check the 'area' of this polygon, it is clearly not correct. It is as if the area being reported is simply using lat / lon as the horizontal coords and interepreting those numbers as 'meters.' Bug, perhaps? Dave.
  12. Hello, how can one export / save a simple jpg, .bmp, or equivalent figure? The 'copy to clipboard' option is very unsatisfactory. Surely there must be a way to create a simple graphic file of the display?? Dave.
  13. dfhill

    ltea

    If I have a scatter set, and a coast / ocean boundary, what is the exact sequence of steps to take in order to do an LTEA? The online tutorial is pretty confusing. - Step 1. The 'initial mesh page'. After selecting boundary and scatter, do I hit 'continue' or do I hit 'stop and run'? Again, I have no initial mesh. Just the bathy scatter set and the outline. -Step 2. The 'adcirc linear run page.' Do I hit continue or do I hit stop and run?? -Step 3. The LTEA page. Again, am I supposed to just 'continue' here or do I have to 'stop and run'?
  14. dfhill

    mesh editing

    Thanks, Rusty. I have sms 10. I have tried to follow your suggestions below, but I am unable to do so. The wiki link below does not work. It is one of my great frustrations with sms that the supporting documentation is so thin. I'll keep trying... D.
  15. dfhill

    mesh editing

    rusty, I'm very experienced in creating grids for adcirc. My question is more about how to quickly grab only a sub-mesh out of a large existing mesh (just for demonstration purposes). I want to basically 'snip' or 'trim' the coastline boundary, only keeping a small portion of it. Then, based upon the existing bathymetry, I just want to regenerate a mesh for that much smaller domain. I CAN just start from scratch, getting the coastline from the coastline extractor, but I was just trying to save a bit of time. Dave.
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