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As per the official outline, this is what we have been assigned to do... This project will be a team-orientated approach to integrating and applying the knowledge and skills acquired in GPS theory and surveying. As part of a team, students will complete (from start to finish) a resource-grade GPS survey project adhering to the BC Resource Inventory Standards Committee (RISC) standards, specifications and guidelines. Your team has been successfully contracted by Selkirk College to carry out GPS surveying and mapping a proposed trail. As part of your contract, you will survey positional and non-positional (attributes) data for the features your team will collect (to be determined through consultation with client). Once the survey data has been completed and processed, your team will produce a map plot, a project report and submit all digital and hard-copy files/notes to the Selkirk College contract administrator by end of last day of class. Your team will also be asked to present your completed project results and summarize the team’s project to the rest of the class on that date. The required survey accuracies (i.e., target accuracies at 95% confidence – i.e., 2DRMS interval) for the project are: Network Horizontal Accuracy = 5 - 10m (Class = 10m) Interpretive Horizontal Accuracy = 5 - 10m (Class = 10m) For clarification, the definition of meeting the above accuracy class is that for GPS point features, at least 95% of the individual position fixes are within the above-specified accuracies horizontal linear measurement of the true position of the point after differential correction. If statistical measures are used to reject outliers, 2 Sigma (95%) will be used for the minimum level of significance.
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10-14-2016
04:30 PM
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update on this project, I ended up creating a empty feature class and loaded each stream layer into it, running a topology each time. there are over 180 thousand streams so there were definte errors. next I created a grid using mapsheets and am meticulously going through each stream and using the "Replace Geometry Tool" to combine the streams where they are duplicate thereby retaining attributes from all input data. seems there is no method to automate the process so I will be editing for some time . .. if you have any suggestions please feel free as I am open to any possible help, thanks!
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08-09-2016
09:10 AM
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I am also working at combining 3 separate stream layers into a single stream layer. I am required to include all 200,000 + features from the three stream layers into the final single stream layer. I will also be required to include a select few of attributes from all 3 layers to be in the final stream layer. I am also setting up a series of 'Domains' to control the data input in a few fields and finally will set up a topology to correct the many expected errors to occur as a result of the combining. A note to make worth noting is these three stream layers are not consistent with regards to placement even though they represent the same streams in most places. I'm using ArcMap 10.2.2 and have considered using the merge tool, or the update tool or append tool. I am just not sure at this point! please provide some directive, thank you!
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07-27-2016
02:02 PM
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