刘新星梁万洁李红燕杨英杰△.MATLAB 7.X生物信息工具箱的应用———聚类分析(七)*[J].现代生物医学进展英文版,2012,12(17):3259-3262. |
MATLAB 7.X生物信息工具箱的应用———聚类分析(七)* |
The Application of MATLAB Bioinformatics Toolbox--ClusterAnalysis(7)* |
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DOI: |
中文关键词: 聚类分析 电子数据表 Clustergram 基因芯片 |
英文关键词: Cluster analysis Excel spreadsheet Clustergram Gene-chip |
基金项目:国家自然科学基金项目(50774102) |
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中文摘要: |
本文主要介绍MATLAB 生物信息工具箱的数据聚类分析功能,该功能主要用于基因芯片数据的分析。将要分析的数据先
转化成XLS 格式的文件,通过函数xlsread 读入MATLAB Workspace,存储为两个变量。对缺失数据进行估算,从而减小结果误
差。函数clustergram 对数据分级聚类,并产生数据的热红外分布图和树状图。通过更改相关参数可以改变其颜色配置,距离算法,
并可做双向聚类。 |
英文摘要: |
This paper introduces the function of MATLAB Bioinformatics Toolbox supplies functions on data clustering
analysis, which is used mostly to analyze the gene chip data. The data should be converted into XLS files at first, then read into the
MATLAB Workspace by the function of xlsread and stored as two variables. Inputing values for defaults is helpful for diminishing
resultant errors. The function clustergram is used to perform hierarchical clustering and to generate a heat map and a dendrogram of the
data. By changing the relevant parametres , the color scheme and the distance arithmetic can be changed, and we can also perform biclustering. |
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