We tested the presence of spatial autocorrelation
in the model residuals using spline correlograms (37) and we used the approach of Crase et al.
The four quadrants in the graph provide a classification of four types of spatial autocorrelation
: high-high (Q1), low-low (Q2), for positive spatial autocorrelation
; high-low (Q3) and low-high (Q4), for negative spatial autocorrelation
we also estimated our model using the spatial auto-regressive (SAR) model with allowance for spatial autocorrelation
in the error term.
Analysis of spatial autocorrelation
for model residuals
In addition, we explore whether the spatial autocorrelation
(Koenig and Knops, 1998; Overmars et al.
The spatial dependence of home bias between two trading countries with cultural, economic and geographical distances would likely yield spatial autocorrelation
problems in the estimation of the home bias model (2).
Moran's I spatial autocorrelation
analysis indicated that NDVI was a clustered variable in most blocks.
On a complementary level, a spatial autocorrelation
study is carried out in order determine whether or not the geographical proximity of countries has any bearing on similar fiscal effort.
The global Moran's I index was used to estimate the strength of the global spatial autocorrelation
of average leprosy case detection rate in this study.
Figure 2 shows the spatial autocorrelation
functions for these eight levels, of the form
To test whether these models were affected by spatial autocorrelation
of residuals (Griffith 1987; Kissling and Carl 2008), we used the global Moran's I statistic.
is characterized by a correlation in a signal among nearby locations in space (Li.