Fig. 4. Interpolated weed maps from sparse sampling (a), dense sampling (b) and five shifted
starting points (shifted by 1.5 m) for sampling (S1-S5). S0 is equal to (a) with weed quantity
information from (b). The weed mapped is ‘Common Lambsquarters’ (Chenopodium album
L.).
The dense sampling grid showed a much more differentiated picture of the weed
distribution. Furthermore, a general problem has been visualised in the process of
shifting the starting points in order to establish the weed distribution maps. The areas
that have not been sampled in the survey produced clear evidence in the simulation