The overall index is obtained by dividing the number of points correctly classified by the total number of points, whereas the kappa index measures the concordance between predicted map units
and reference map units
, excluding the effect of casualty (Congalton and Green 1999; Giasson et al.
Red colors correspond to large distances; that is, large gaps exist between the prototype vector values in the input space; blue colors correspond to small distance; that is, map units
are strongly clustered together.
Both methods of instance selection that account for areas located close to soil map unit
boundaries tested in this study did not contribute to greater accuracy of classification trees used in digital soil class mapping when using the model to predict soil occurrence in the overall area.
As stated in the literature, many construction issues are encountered when cartographically depicting language, particularly with boundaries, map unit
choice, and handling linguistic diversity.
With the purpose to verify the hits distribution and to better clarify the discriminating performances of the SOM analysis about the event evolution on SCC tests on post-tensioned strands, a hits validation map was analyzed by using a fuzzy response parameter to show the relative goodness of each map unit
in representing the data.
A GIS approach was used to delineate Land Type Association (LTA) map units
for the Hoosier National Forest (HNF) area.
The amount of water potentially available for deep percolation and recharge would therefore greatly rely upon a thorough characterization of hydrology of representative pedons (Barner 1999) and their distribution as soil map units
in a watershed.
Code % Slope Description A 0-2 Nearly level B 2-6 Gently sloping C 6-12 Sloping D 12-18 Strongly sloping E 18-30 Severely sloping F 30-60 Steep > 60 Very steep TABLE 15-2 Designation of erosion characteristics for soil-mapping units.
The variable [d.sub.ij] represents the amount of mapping information for interval i conferred by progeny j on a per map unit
Leahy S (1993) 'Atlas of Australian soils: Combined map unit
descriptions.' (National Resource Information Centre: Parkes, ACT)
A buffer in any soil map unit
having conditions described by groundwater categories 1 to 3 will probably interact with pollutants in groundwater.