howtos:toolcoding:using_maps
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howtos:toolcoding:using_maps [2011/06/16 18:40] chris.strashok |
howtos:toolcoding:using_maps [2011/06/17 16:03] (current) chris.strashok |
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| The mapcat tool can also be used for aggregating elements into classes or groups. The example below uses the data found in the following table to use the categorization as a map to transform the population data for each province to a region class while aggregating over each province to get the total population in each region. | The mapcat tool can also be used for aggregating elements into classes or groups. The example below uses the data found in the following table to use the categorization as a map to transform the population data for each province to a region class while aggregating over each province to get the total population in each region. | ||
| - | {{:howtos:toolcoding:mapdata5.gif|}} | + | {{:howtos:toolcoding:mapdata5_rev1.gif|}} |
| The supporting tool script code for building the informants and importing data above can be found [[howtos:toolcoding:mapEx5|here]]. | The supporting tool script code for building the informants and importing data above can be found [[howtos:toolcoding:mapEx5|here]]. | ||
| Line 251: | Line 251: | ||
| <code> | <code> | ||
| - | localinformant provLoc[p->l] = create (; object=category, groups=province, members=location, \ | + | localinformant locProv[l->p] = create (; object=category, groups=location, members=province, \ |
| - | "Alberta"="west", \ | + | "west"="Alberta", \ |
| - | "British Columbia"="west",\ | + | "west"="British Columbia",\ |
| - | "Newfoundland"="east",\ | + | "east"="Newfoundland",\ |
| - | "Nova Scotia"="east",\ | + | "east"="Nova Scotia",\ |
| - | "Ontario"="central",\ | + | "central"="Ontario",\ |
| - | "PEI"="east") | + | "east"="PEI") |
| </code> | </code> | ||
| Line 265: | Line 265: | ||
| <code> | <code> | ||
| - | local provLoc_Cat[p->l] = mapcat (provinceData[p]; category=provLoc) | + | local provLoc_Cat[l->p] = mapcat (provinceData[p]; category=locProv) |
| - | table (provLoc_Cat[p->l]) | + | table (provLoc_Cat[l->p]) |
| </code> | </code> | ||
| Line 279: | Line 279: | ||
| <code> | <code> | ||
| - | local regions[p,l] = mapcat (provLoc_Cat[p->l]) | + | local regions[l,p] = mapcat (provLoc_Cat[l->p]) |
| - | table (regions[p,l]) | + | table (regions[l,p]) |
| </code> | </code> | ||
| Line 293: | Line 293: | ||
| <code> | <code> | ||
| - | local regions_sum[l] = sum (regions[p,l]; \ | + | local regions_sum[l] = sum (regions[l,p]; \ |
| dim=province) | dim=province) | ||
howtos/toolcoding/using_maps.1308249607.txt.gz · Last modified: 2011/06/16 18:40 by chris.strashok
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