以GSE27284为例,提取出U值和M值后
时间: 2024-05-07 13:20:45 浏览: 85
GSE27284是一个基因表达谱数据集,可以使用R语言中的GEOquery包或Python中的GEOparse包来下载和处理数据。经过下载和预处理后,可以使用以下代码来提取U值和M值:
```r
library(limma)
library(GEOquery)
gse <- getGEO("GSE27284", destdir = "./")
gse <- gse[[1]]
exprs <- exprs(gse)
design <- model.matrix(~factor(pData(gse)$tissue))
fit <- lmFit(exprs, design)
fit <- eBayes(fit)
U <- fit$coefficients[,2]
M <- fit$Amean
# U值和M值的前10个数
head(U, 10)
head(M, 10)
```
```python
import GEOparse
import numpy as np
import pandas as pd
from statsmodels.formula.api import ols
from statsmodels.stats.anova import anova_lm
gse = GEOparse.get_GEO("GSE27284", destdir="./")
df = pd.DataFrame(gse.table)
df.set_index("ID_REF", inplace=True)
df.drop(columns=["GeneSymbol"], inplace=True)
df = np.log2(df.astype(float) + 1)
metadata = gse.phenotype_data
metadata["Intercept"] = 1
model = ols("tissue ~ 0 + Intercept", metadata).fit()
U = model.params["Intercept"]
M = df.mean(axis=1)
# U值和M值的前10个数
print(U.head(10))
print(M.head(10))
```
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