当使用该gstat包使用该krige函数进行空间插值时，我只得到样本位置的结果。这不是我所期望的，已经阅读了它如何工作的清晰解释，这里有一个可重复的例子：https ://keen-swartz-3146c4.netlify.app/interpolation.html
有什么想法我哪里出错了吗？我尝试了各种方法但无济于事，因此在这里提出了一个可重复的示例。
library(sf)
#> Linking to GEOS 3.8.0, GDAL 3.0.4, PROJ 7.0.0
library(gstat)
library(stars)
#> Loading required package: abind
u = "https://github.com/saferactive/saferactive/releases/download/0.1.1/rnet_lnd_1pcnt.Rds"
rnet_lnd = readRDS(url(u))
rnet_lnd
#> Simple feature collection with 698 features and 9 fields
#> geometry type: POINT
#> dimension: XY
#> bbox: xmin: 506201.1 ymin: 157489.3 xmax: 554024 ymax: 197327
#> projected CRS: OSGB 1936 / British National Grid
#> First 10 features:
#> local_id bicycle govtarget_slc govnearmkt_slc gendereq_slc dutch_slc
#> 36469 36469 2 8 4 4 38
#> 72154 72154 296 464 509 415 992
#> 13692 13692 64 75 85 99 170
#> 51194 51194 10 10 15 20 38
#> 45023 45023 5 20 14 10 78
#> 14664 14664 140 166 189 198 270
#> 62204 62204 31 41 48 49 118
#> 48161 48161 7 18 16 14 83
#> 37306 37306 2 17 12 3 88
#> 8329 8329 10 34 32 19 144
#> ebike_slc length km_cycled_yr geometry
#> 36469 40 75.14911 76.05090 POINT (540554.4 184261.5)
#> 72154 1191 21.59051 3233.73959 POINT (532707.7 182641.9)
#> 13692 224 50.93146 1649.36427 POINT (526445.2 177201.8)
#> 51194 50 236.08443 1194.58721 POINT (533507.4 186557.7)
#> 45023 91 211.86509 536.01868 POINT (541408.3 180908.9)
#> 14664 342 14.72725 1043.27843 POINT (532361.8 186576.6)
#> 62204 193 550.77091 8639.39256 POINT (536944.7 176095.4)
#> 48161 104 194.18121 687.78986 POINT (534208 190667.8)
#> 37306 98 52.39301 53.02172 POINT (534251.2 195203.9)
#> 8329 249 81.10461 410.38932 POINT (540147.3 192165.4)
grd = st_bbox(rnet_lnd) %>%
st_as_stars(dx = 500, dy = 500) %>%
st_set_crs(27700) %>%
st_crop(rnet_lnd)
grd
#> stars object with 2 dimensions and 1 attribute
#> attribute(s):
#> values
#> Min. :0
#> 1st Qu.:0
#> Median :0
#> Mean :0
#> 3rd Qu.:0
#> Max. :0
#> NA's :7051
#> dimension(s):
#> from to offset delta refsys point values
#> x 1 96 506201 500 OSGB 1936 / British Natio... NA NULL [x]
#> y 1 80 197327 -500 OSGB 1936 / British Natio... NA NULL [y]
v = variogram(bicycle~1, rnet_lnd, cutoff = 10000)
#> Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj
#> = prefer_proj): Discarded datum Unknown based on Airy 1830 ellipsoid in CRS
#> definition
#> Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj =
#> prefer_proj): Discarded datum OSGB 1936 in CRS definition
plot(v)
vm = fit.variogram(v, vgm(psill = "Sph", model = "Exp", range = 10000, nugget = 1))
plot(vm, cutoff = 10000)
rnet_krige = gstat::krige(bicycle~1, rnet_lnd, grd, vm, nmax = 100)
#> [using ordinary kriging]
plot(rnet_lnd$geometry)
plot(rnet_krige, add = TRUE)
由reprex 包（v0.3.0）于 2020 年 10 月 26 日创建
devtools::session_info()
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