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The following two screenshots explain how to fill the sections used to input the different layers and parameters to run the analysis:
Data inputs:
(1) Under “Select merged land cover layer (raster)”, select the raster format layer containing the merged land cover, "land cover merged". Under “Select scenario table (table)”, select the travel scenario table you want to use. The one created in the previous module in the present case
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The sections in the second part of the analysis panel can then be filled as follow:
Facilities selection
(1) In the “From” table, select the facilities you want to serve as points of departure ("From"). You can either do it “by hand”, by checking the records that have the value “Health Centre” in the column “hf_type”, or you can use the filter tool at the top of the table to automatically select these centers. The second option is particularly useful when there is a large number of facilities in the layer and/or to be selected.
(2) Similarly, in the “To” table, select the facilities you want to serve as points of arrival ("To"). That means that those facilities that have the “Hospital” type in the column “hf_type”, are selected for the present exercise.
Analysis settings:
(3) Under “Type of Analysis”, select the option to do an anisotropic analysis as you did for the previous analysis
(48) Select the “Limit the spatial analysis to the closest destination point in time” pair time-wise” option if you want to restrict the analysis and the output table to the closest health facility, in term of travelling time. We will not use that restriction in the present exercise.
(510) If you want to limit the travel time for the analysis, you can specify this maximum travel time here under "Maximum travel time (minutes)". If you do so, those health facilities that can be reached in a time that is greater than this specified maximum travel time will not appear in the output tables. We will not use a maximum travel time in the present exercise, and you can therefore specify "0" in the entry field.
(611) Under “(Add short tags)”“Add short tags”, give short tags to be attached to the different outputs of the analysis. We will use "referral" for the present exercise.
Validation:
(712) The validation module should indicate that all fields have been correctly filled in (with a green “OK”). If this is the case, you can hit the "Compute" button to launch the analysis. If this is not the case, the "Compute" button will still be in red, and you will have to go through the warning and error message to find out what needs to be adjusted.
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A transparent window with some text and a progress bar will appear in front of the panel while the analysis is being conducted. Please wait until this window disappears to continue using AccessMod. This analysis can take a lot of time to completed especially if the number of health facilities to be processed is high.
In In addition to the processed scenario table, as well as the speed and friction spatial distribution layers, this analysis will generate three output tables that will now be listed in the Available Layers section of the Data module, namely:
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