Delete additional test datasets

data/raw/example_data.csv

-ID,farm_id,field_id,country,province,city,crop,season,grain_yield$kg.ha,farm_size$ha,name_farmer,longitude$decimal_degrees,latitude$decimal_degrees
-x1,A,F1,Netherlands,Gelderland,Wageningen,maize,1,2924,1,John Smith,5.664526,51.99115
-x2,A,F1,Netherlands,Gelderland,Wageningen,maize,2,3183,1,John Smith,5.664526,51.99115
-x3,B,F1,Netherlands,Gelderland,Wageningen,maize,1,2829,1.5,Sally Jones,5.662707,51.986473
-x4,B,F1,Netherlands,Gelderland,Wageningen,maize,2,1692,1.5,Sally Jones,5.662707,51.986473
-x5,C,F1,Netherlands,Gelderland,Wageningen,maize,1,3401,0.5,Bob Sponge,5.673245,51.992453
-x6,C,F1,Netherlands,Gelderland,Wageningen,maize,2,3537,0.5,Bob Sponge,5.673245,51.992453
-x7,C,F2,Netherlands,Gelderland,Wageningen,maize,1,2205,0.5,Bob Sponge,5.673245,51.992453
-x8,C,F2,Netherlands,Gelderland,Wageningen,maize,2,1204,0.5,Bob Sponge,5.673245,51.992453
\ No newline at end of file

results/raw/fertilzer_trial_stats.txt

+[1] "anova table:"
+Analysis of Variance Table
+
+Response: yield
+           Df  Sum Sq Mean Sq  F value Pr(>F)    
+farm        2   0.279   0.139   0.2634 0.7691    
+fertilizer  2 259.292 129.646 245.1385 <2e-16 ***
+Residuals  81  42.838   0.529                    
+---
+Signif. codes:  0 *** 0.001 ** 0.01 * 0.05 . 0.1   1
+[1] "em means table:"
+ farm        fertilizer  emmean    SE df lower.CL upper.CL
+ de Jong     Efficientie  12.93 0.173 81    12.59    13.28
+ de Kerk     Efficientie  13.05 0.173 81    12.70    13.39
+ van de Boer Efficientie  13.15 0.178 81    12.80    13.50
+ de Jong     Miracle      10.51 0.173 81    10.16    10.85
+ de Kerk     Miracle      10.62 0.177 81    10.27    10.97
+ van de Boer Miracle      10.72 0.174 81    10.38    11.07
+ de Jong     SuperDash     8.69 0.178 81     8.33     9.04
+ de Kerk     SuperDash     8.80 0.174 81     8.45     9.15
+ van de Boer SuperDash     8.90 0.178 81     8.55     9.26
+
+Confidence level used: 0.95 

scripts/3_analysis.R

 ##### Minimal Reproducible Analysis Example
 ##### 3 - analysis
 
+library(openxlsx)
 library(ggplot2)
 library(emmeans)