Supplement 1. R code used in simulations and .R data files used in empirical deer analysis presented in the paper.

File List Northrup_et_al_sim1.R (MD5: 7871a38651afc40d2fc94a39017b0350) Northrup_et_al_sim2.R (MD5: 657d577665837eb60db6d221c9531163) Northrup_et_al_sim3.R (MD5: 94adf95bcd9368d56c893dd2652be15b) Northrup_et_al_deer.R (MD5: af1edd7b19575e791f08095d93f46ff5) avail.file.R (MD5: 18c3f792f9cad9683b12fe5cf41bad97) used.file.R (MD5: 2b7f7836b9f38cbd02efbdea561d2305) elev_simple.asc (MD5: 3f265f17358719e0fae209b989c4ca5d) Description Northrup_et_al_sim1.R: Simulation of use-availability data as a point process at 3rd order scale and fitting of resource selection functions with varying availability samples that are matched or mismatched to the used sample. Covariate used is elevation, from the Piceance Basin NW Colorado. Northrup_et_al_sim2.R: Simulation of use-availability data as a point process at 3rd/4th order scale and fitting of resource selection functions with varying availability samples that are matched or mismatched to the used sample. Covariates simulated as Gaussian random field. Northrup_et_al_sim3.R: Simulation of use-availability data as a point process at 3rd order scale and fitting of resource selection functions with varying availability samples that are matched or mismatched to the used sample. Covariates simulated as Gaussian random field. Northrup_et_al_deer.R: Code for testing convergence of resource selection function coefficients as a function of availability sample size for one mule deer and 3 covariates, elevation, distance to roads, and slope. avail.file.R: Environmental covariates at available locations used in "Northrup_et_al_deer.R" code. used.file.R: Environmental covariates at used locations used in "Northrup_et_al_deer.R" code. elev_simple.asc: ASCII file of elevation in the Piceance Basin, for use in "Northrup_et_al_sim1.R."

文件列表如下：
Northrup_et_al_sim1.R（MD5：7871a38651afc40d2fc94a39017b0350）
Northrup_et_al_sim2.R（MD5：657d577665837eb60db6d221c9531163）
Northrup_et_al_sim3.R（MD5：94adf95bcd9368d56c893dd2652be15b）
Northrup_et_al_deer.R（MD5：af1edd7b19575e791f08095d93f46ff5）
avail.file.R（MD5：18c3f792f9cad9683b12fe5cf41bad97）
used.file.R（MD5：2b7f7836b9f38cbd02efbdea561d2305）
elev_simple.asc（MD5：3f265f17358719e0fae209b989c4ca5d）

各文件详情如下：
1. Northrup_et_al_sim1.R：模拟三阶尺度下作为点过程（Point Process）的使用-可用性数据，并针对与使用样本匹配或不匹配的不同可用性样本量，拟合资源选择函数（Resource Selection Functions）。所用协变量为海拔数据，源自科罗拉多州西北部皮斯安斯盆地。
2. Northrup_et_al_sim2.R：模拟三四阶尺度下作为点过程（Point Process）的使用-可用性数据，并针对与使用样本匹配或不匹配的不同可用性样本量，拟合资源选择函数（Resource Selection Functions）。协变量通过高斯随机场（Gaussian Random Field）模拟生成。
3. Northrup_et_al_sim3.R：模拟三阶尺度下作为点过程（Point Process）的使用-可用性数据，并针对与使用样本匹配或不匹配的不同可用性样本量，拟合资源选择函数（Resource Selection Functions）。协变量通过高斯随机场（Gaussian Random Field）模拟生成。
4. Northrup_et_al_deer.R：针对1只骡鹿与3个协变量（海拔、到道路的距离以及坡度），探究资源选择函数（Resource Selection Functions）系数的收敛性随可用性样本量变化的代码。
5. avail.file.R："Northrup_et_al_deer.R"代码中所用的、对应可用位点的环境协变量数据。
6. used.file.R："Northrup_et_al_deer.R"代码中所用的、对应使用位点的环境协变量数据。
7. elev_simple.asc：科罗拉多州皮斯安斯盆地的海拔ASCII文件，供"Northrup_et_al_sim1.R"使用。