Latest Contributions by AarielRocha1

‎05-05-2016

I will post my final figure once we get this work published. This has definitely been a great learning experience for me. Thanks again.

‎05-01-2016

That was it! I had clipped my ice edges to an outline of my study site and discovered some topology issues between the coastline and the ice-free areas of the coast. When I preformed the clip, some of the ice edges became fragmented and that threw off the results. Now I have some nice summary statistics to work with. Thanks for your help (and extra brownie points for working weekends!)

‎05-01-2016

Xander, Each of my ice lines is single part, and all year values are unique. However, looking closely at my lines, I see that the offending ones have breaks in them (and thus may behave as a multipart, I suppose). I will fix those and try again. Thank you very much for your quick response. Your assistance has been instrumental in my progress and is much appreciated. Aariel

‎04-29-2016

Thank you kindly for your support on this problem. I have been able to apply the script properly, however when I modified the ice lines something strange happened. It seems that when the routes are created there is a sort of 'doubling back' in a straight line that throws of the results. Since the problem began when I modified length of the ice lines by clipping off the ends, I think it may have to do with the step setting?

‎04-24-2016

Xander, I was called away for another project, so I am just now trying to apply your code. Could you explain more how files were set up prior to running the code? I have each of my ice lines in separate feature classes within a geodatabase, but am getting errors that runtime cannot open the ice edge files after line 40 (part of # loop through ice edges and create dct with polyline m values). it seems that I don't have the files in the proper format. Thanks for your help

‎01-30-2016

Thanks so much, I will try this now

‎01-26-2016

looks like this approach may help. Creating points at a specific distance from other points along a line

‎01-26-2016

Thanks for the response Dan. I have already split my tangent lines at the intersections with each of my ice edge lines. That is how I got the lengths (=distance from shore) for each date that I needed to get the average distances. Now I need to get the endpoints from lines that are the average distance from shore.

‎01-25-2016

I have developed landfast sea ice extents that can be visualized as polygons, lines or rasters. Now I need to calculate monthly and yearly averages and it is much more difficult to create an average line from a set of polylines than I had imagined. I first tried to use raster world and the Euclidean Distance tools to determine the distance from shore, but since the ice lines and the shoreline are so complex I needed a way to measure the distance from the same point on land or the averages are meaningless. so, I developed a set of tangent lines and intersected them with my ice edge lines to get a set of points. I have been able to use spatial join to get the distances from shore and then add field and field calculator to get average distances along each of my tangent lines. My plan is to then plot the average distances for each tangent line as a point and then connect the points to show the 'average' of my original ice edge lines for each month and year. I think that I need to use linear referencing tools to get past this latest hurdle, so I created routes from my set of tangent lines. Now I need to create points that are my 'average distance' from shore but I am at a loss. I have minimal experience scripting and would appreciate help using the geoprocessing tools in modelbuilder. Thanks, Aariel

Online Status	Offline
Date Last Visited	‎11-11-2020 02:25 AM

My Ideas

Latest Contributions by AarielRocha1

Re: average of ice edge lines (distance from coast)

Re: average of ice edge lines (distance from coast)

Re: average of ice edge lines (distance from coast)

Re: average of ice edge lines (distance from coast)

Re: average of ice edge lines (distance from coast)

Re: average of ice edge lines (distance from coast)

Re: average of ice edge lines (distance from coast)

Re: average of ice edge lines (distance from coast)

average of ice edge lines (distance from coast)

Re: average of ice edge lines (distance from coast...

Re: average of ice edge lines (distance from coast...

average of ice edge lines (distance from coast)