Key Workflows
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Generating Corridors
Advanced Corridor Documentation
11 min
want to get the most out of optioneer’s corridors? in this guide, you’ll learn what they are, how to refine them, and proven practices for analysis corridors as you learned in docid\ jupazo9sc8sui5llaw5lw , corridors are defined boundaries between points on your map that highlight areas with the lowest consenting scores, impacts, and penalties in other words, they identify the areas within your search space that carry the least consenting risk depending on your project's scale and length, corridors can be up to 5 km wide pro tip create corridors before moving on to routes and alignments this approach streamlines the optioneering process and ensures the engine searches for routes only within pre designated areas once corridors have finished generating, all five results will appear in the results library to activate them, you can either click the icon beside the main result to activate all five results at once or, click the symbol and use the icon beside each option to activate corridors individually to better understand these five results, refer to docid\ gxkiyjzkrpimryrxoso7p pro tip in the results library , go to metrics > edit columns and search for distance from least cost path to display the lcp for each case save this as a new saved metric view for easy access later design rules optionally, you can use the corridor optimisation parameters design rule to set a minimum corridor width this ensures that constructible corridors are prioritized early in the process and helps identify potential pinch points when this parameter is applied, the corridor generation algorithm will avoid routing through gaps narrower than the specified minimum width prevent the creation of narrow pinch points below the threshold analysing a corridor optioneer's outputs —such as docid\ rofftoeskr8cdcwghyukp —can also support qualitative assessment, which is essential for reporting and consultation for example, analysis of a corridor might reveal a high number of potentially affected buildings with the right data available, reporting can help identify the owners of these properties, making it easier to engage with landowners and local residents this information can be gathered directly in platform and then taken forward into real world conversations and next steps iterating on a corridor you can iterate and refine any corridor on your map in much the same way as routes and alignments this is especially useful if the generated corridor includes areas you’d like to exclude, or if your project scope changes and you need to review a larger or smaller area to begin, export your corridor as a polygon open the results library from any tab in the list of results, locate your corridor and click the icon to view each result click the three dot icon beside the corridor you want to export, then select duplicate to project features close the results library the duplicated polygon will now appear under polygons in the project features panel (within the data tab) drawn feature outside project boundaries if you see the warning "drawn feature is outside project boundaries" , click the enable cutting holes toggle and draw a rectangle around the area outside the boundaries this will remove the specified vertices and allow you to save the result polygon too large to upload if you see the warning "the polygon is too large to be uploaded please reduce the size of the polygon and try again" first, lower the accuracy slider to reduce the number of vertices if the warning still appears, cut the polygon in half using the enable cutting holes toggle once you’ve duplicated your corridor to a polygon, you can refine it directly in the project features panel of the data tab open the docid\ uon1ceip4jc8s6sdrysfs panel navigate to polygons and locate the duplicated polygon hover over the polygon, click the three dot icon , and select edit the editor window will open adjust the shape on the map, click and drag a red vertex to make larger adjustments for finer, smaller adjustments, click and drag an orange vertex — this will automatically create a new red vertex click on a vertex and press backspace or delete to remove it use the accuracy slider to control line precision higher accuracy = smoother, rounded lines with more edit points lower accuracy = simpler lines with fewer points save your changes add a name and, if needed, a description for your iterated polygon click save to confirm your edits cutting holes in a polygon (creating no go zones) at any point while editing, you can cut holes in your polygon to define no go zones —areas where routes will not be considered in the polygon editor, click enable cutting holes the vertices on your polygon will disappear inside the polygon, draw a new shape by clicking and dragging as you did when creating the original polygon assign a new name to the new shape (this step is required—without a name, the cut hole will not save) click save to confirm note this action overwrites the original polygon once saved, the updated polygon (with its no go zones) will appear under polygons in the project features panel of the data tab adding additional corridors you can add an unlimited number of additional corridors to your map at any time by repeating the steps used to create your original corridor this allows you to optimize your project space and explore multiple areas for potential development sites note performance may be affected if a large number of corridors are created on your map (e g , 50 or more) adding and editing polygons as your project develops, you may come across new information or previously unlogged data that changes your planning for example, you might learn of a new solar or wind farm that blocks potential overhead lines, or encounter a landowner whose property you want to avoid in these cases, you can draw new polygons around the affected areas and add them to your existing configuration this tells the engine to avoid generating routes through those zones, just as it respects boundaries defined by your existing polygons you can also iterate on existing polygons to create new layers, including no go zones around specific areas to apply penalties or costs for crossing a polygon layer, go to the asset’s penalty parameters or costing parameters to define no go zones or prioritize a specific asset within a layer, use the asset’s technical parameters note technical parameters can only be set in the technical design rule likewise, scores can only be provided through the penalty and cost design rules docid\ dlxwkrhbx6lst2isbtol4 within a corridor now that you have your corridor, you can generate routes within it navigate to the setup tab select points choose two or more points on the map to route between confirm features select corridor from the list of polygons in project features , select the corridor(s) you want to use following these steps, when you run a generation or evaluation case, the engine will search for viable routes only within the selected corridor(s)

