To import data using the “Import”section, you must first decide on the “data class”. Data class in AccessMod defines both the type of data (raster, vector, or table) and the type of content (e.g. land cover, population,...). This allows AccessMod to pre-fill various text fields in the user interface with the correct type of information, which prevents (in many cases) the users to use in appropriate inappropriate data sets for the analyses.
The various data classes are as follows (with “(r)”=“raster”, “(t)”=“table”, and “(v)”=“vector):
| Data class | Data type | Data content |
|---|---|---|
(r) dem | raster | digital elevation model (see Section 3.3.1.2) |
(r) land cover | raster | land cover distribution (see Section 3.3.1.4) |
(r) land cover merged | raster | land cover distribution after the merging with the road network and barriers layers (output of the merge land cover tool - see Section 0) |
(r) population | raster | spatial distribution of the target population (see Section 3.3.1.3) |
(r) population residual | raster | spatial distribution of the residual population (output of the geographic coverage analysis - see Section 5.5.4) |
| (r) imported travel time | raster | travel time distribution (obtained through a previous accessibility analysis (see Section 5.5.3) that one wants to reimport into AccessMod |
(r) priority | raster | spatial distribution of priority areas used in the scaling up analysis (see Section 3.3.1.10) |
(r) exclusion | raster | exclusion zone(s) (see Section 3.3.1.5) |
(t) exclusion | table | exclusion criteria used during the scaling up analysis (output of the scaling up analysis - see Section 5.5.7) |
(t) land cover | table | link between each land cover categories and their corresponding label (see Section 3.3.1.4) |
(t) scenario | table | speed and mode of transport for each class in the merged land cover layer (see Section 3.3.2.2) |
(t) capacity | table | types and coverage capacities of new health facilities to locate during the scaling up analysis (see Section 3.3.2.3) |
(t) suitability | table | suitability criteria used during the scaling up analysis (output of the scaling up analysis - see Section 5.5.7) |
(v) barrier | vector | barriers to movements (polygons, lines, points) (see Section 3.3.1.8) |
(v) road | vector | road network, with information on road categories (see Section 3.3.1.7) |
(v) facility | vector | health centers location (points) (see Section 3.3.1.6) |
(v) zone for stat | vector | zones (polygons), typically administrative units, for used to extract statistics during the zonal statistics analysis (see Sections 3.3.1.9 and 5.5.6) |
(v) exclusion | vector | exclusion zone(s) (polygons) in which no new health facility can be located during the scaling up analysis (see Sections 3.3.1.5) |
Next, you are asked to provide a tag (see Section 0) and to check the validation information for the data you are about to upload. Once all is good, the “Choose and import data" button will turn grey and you will be able to select the corresponding file(s).
Please look at the beginning of Sections Section 3.3.1 for more information regarding the file(s) that needs to be selected depending on the format used for geospatial data, and at the beginning of Section 3.3.2 for the list of tabular formats supported by AccessMod.
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