我正在尝试从许多线性回归模型中提取斜率值。我绘制了不同日期的丙酮排放量与水含量的关系。
我有这些图表和模型
我尝试使用以下代码提取斜率值：
Library(broom)
Library(tidyverse)
lm_table <- df %>%
nest_by(days) %>%
summarise(mdl = list(lm(water_content ~ acetone, data)), .groups = "drop") %>%
mutate(adjrsquared = map_dbl(mdl, ~summary(.)$adj.r.squared ),
mdl = map(mdl, broom::tidy)) %>%
unnest(mdl)%>%
filter(term=="acetone")
还有这段代码：
lm_table2 <- df %>%
nest_by(days) %>%
mutate(model = list(lm(water_content ~ acetone, data)),
coefficients2 = list(tidy(model)))
coefficients2 = lm_table2 %>%
unnest(coefficients2)
然而，这两个代码给出的斜率值与我从图中得到的不同。关于为什么会这样的任何想法？
这是数据
df <- structure(list(i.x45.03 = c(22, 17, 11, 1782, 1767, 250, 3568,
79, 219, 855, 12009, 395, 1552, 705, 2282, 84, 3396, 252, 2058,
1480, 5, 745, 2573, 1005, 946, 3320, 5406, 2192, 20, 1207, 9519,
66, 463, 250, 1095, 16556, 88, 2695, 275, 16, 1577, 29, 3221,
25, 6295, 2, 63, 123, 8, 1, 37, 5308, 4546, 994, 4567, 421, 0,
1938, 19480, 1027, 3474, 1982, 2819, 69, 27733, 2152, 15429,
996, 8, 3435, 8748, 17062, 269, 26188, 35823, 2572, 67, 761,
13493, 1, 1, 1, 16, 9, 29, 89, 20, 11, 21644, 3, 37, 13, 0, 0,
0, 0, 3, 30, 19, 0, 0, 242, 7246, 1, 20081, 77, 0, 0, 0, 5878,
0, 0, 22, 2, 4, 1, 93, 12, 2, 73, 0, 19, 0, 0, 2, 48, 3, 0, 0,
0, 0, 22, 4, 0, 0, 0, 0, 0, 0, 1, 87, 0, 0, 3, 0, 0, 4, 1, 0,
82, 7, 0, 0, 0, 7, 22, 34, 17, 0, 0, 0, 0, 0, 2, 19, 3, 0, 990,
0, 0, 0, 0, 84, 9, 0, 5, 1246, 1944, 633, 23640, 262, 5399, 83,
19, 4417, 125, 7801, 69, 6755, 6, 39, 262), i.water_content_percent_es = c(98,
39, 85, 14, 21, 28, 50, 83, 21, 59, 20, 66, 61, 70, 46, 23, 8,
17, 10, 75, 52, 13, 9, 8, 47, 8, 8, 46, 86, 24, 17, 31, 35, 19,
32, 40, 79, 22, 49, 91, 15, 90, 63, 90, 60, 53, 29, 91, 98, 39,
85, 14, 21, 28, 50, 83, 21, 59, 20, 66, 61, 70, 46, 23, 8, 17,
10, 75, 52, 13, 9, 8, 47, 8, 8, 46, 86, 24, 17, 39, 85, 14, 21,
28, 50, 83, 21, 59, 20, 66, 61, 70, 46, 98, 23, 8, 17, 10, 75,
52, 13, 9, 8, 47, 8, 8, 46, 86, 24, 17, 31, 35, 19, 32, 40, 79,
22, 49, 91, 15, 90, 63, 90, 60, 53, 29, 91, 98, 39, 85, 14, 21,
28, 50, 83, 21, 59, 20, 66, 61, 70, 46, 23, 8, 17, 10, 75, 52,
13, 9, 8, 47, 8, 8, 46, 86, 24, 17, 31, 35, 19, 32, 40, 79, 22,
49, 91, 15, 90, 63, 90, 60, 53, 29, 91, 31, 35, 19, 32, 40, 79,
22, 49, 91, 15, 90, 63, 90, 60, 53, 29, 91), daysincubated4 = c(0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 24, 24, 24, 24,
24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 116, 116, 116,
116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116,
116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116,
116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116,
116, 116, 116, 116, 116, 116, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4), days = c(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
24, 24, 24, 24, 116, 116, 116, 116, 116, 116, 116, 116, 116,
116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116,
116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116,
116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4), water_content = c(98,
39, 85, 14, 21, 28, 50, 83, 21, 59, 20, 66, 61, 70, 46, 23, 8,
17, 10, 75, 52, 13, 9, 8, 47, 8, 8, 46, 86, 24, 17, 31, 35, 19,
32, 40, 79, 22, 49, 91, 15, 90, 63, 90, 60, 53, 29, 91, 98, 39,
85, 14, 21, 28, 50, 83, 21, 59, 20, 66, 61, 70, 46, 23, 8, 17,
10, 75, 52, 13, 9, 8, 47, 8, 8, 46, 86, 24, 17, 39, 85, 14, 21,
28, 50, 83, 21, 59, 20, 66, 61, 70, 46, 98, 23, 8, 17, 10, 75,
52, 13, 9, 8, 47, 8, 8, 46, 86, 24, 17, 31, 35, 19, 32, 40, 79,
22, 49, 91, 15, 90, 63, 90, 60, 53, 29, 91, 98, 39, 85, 14, 21,
28, 50, 83, 21, 59, 20, 66, 61, 70, 46, 23, 8, 17, 10, 75, 52,
13, 9, 8, 47, 8, 8, 46, 86, 24, 17, 31, 35, 19, 32, 40, 79, 22,
49, 91, 15, 90, 63, 90, 60, 53, 29, 91, 31, 35, 19, 32, 40, 79,
22, 49, 91, 15, 90, 63, 90, 60, 53, 29, 91), acetone = c(22,
17, 11, 1782, 1767, 250, 3568, 79, 219, 855, 12009, 395, 1552,
705, 2282, 84, 3396, 252, 2058, 1480, 5, 745, 2573, 1005, 946,
3320, 5406, 2192, 20, 1207, 9519, 66, 463, 250, 1095, 16556,
88, 2695, 275, 16, 1577, 29, 3221, 25, 6295, 2, 63, 123, 8, 1,
37, 5308, 4546, 994, 4567, 421, 0, 1938, 19480, 1027, 3474, 1982,
2819, 69, 27733, 2152, 15429, 996, 8, 3435, 8748, 17062, 269,
26188, 35823, 2572, 67, 761, 13493, 1, 1, 1, 16, 9, 29, 89, 20,
11, 21644, 3, 37, 13, 0, 0, 0, 0, 3, 30, 19, 0, 0, 242, 7246,
1, 20081, 77, 0, 0, 0, 5878, 0, 0, 22, 2, 4, 1, 93, 12, 2, 73,
0, 19, 0, 0, 2, 48, 3, 0, 0, 0, 0, 22, 4, 0, 0, 0, 0, 0, 0, 1,
87, 0, 0, 3, 0, 0, 4, 1, 0, 82, 7, 0, 0, 0, 7, 22, 34, 17, 0,
0, 0, 0, 0, 2, 19, 3, 0, 990, 0, 0, 0, 0, 84, 9, 0, 5, 1246,
1944, 633, 23640, 262, 5399, 83, 19, 4417, 125, 7801, 69, 6755,
6, 39, 262)), row.names = c(NA, -192L), class = "data.frame")
我制作的图表的代码是：
library(ggpmisc)
library(tidyverse)
formula <- y~x
ggplot(df, aes(water_content, acetone)) +
geom_point() +
geom_smooth(method = "lm",formula = y~x) +
theme_bw()+
facet_wrap(~days, scales = "free")+
stat_poly_eq(
aes(label = paste(stat(adj.rr.label), stat(eq.label), stat(p.value.label), sep = "*\", \"*")),
formula = formula, parse = TRUE, size=3)
任何想法为什么我没有得到相同的斜率值？
非常感谢所有帮助！