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格式说明链接: http://zzz.bwh.harvard.edu/plink/data.shtml#map
map格式的文件, 主要是图谱文件信息, 主要包括染色体名称, 所在的染色体和所在染色体的坐标.
1, map文件没有行头
2, map文件包括四列: 染色体, SNP名称, SNP位置, 碱基对坐标
3, 如果只有SNP名称, 可以手动构建map文件, 第二列为SNP名称, 其它三列为0即可.
英文格式说明
By default, each line of the MAP file describes a single marker and must contain exactly 4 columns: chromosome (1-22, X, Y or 0 if unplaced) rs# or snp identifier Genetic distance (morgans) Base-pair position (bp units) Genetic distance can be specified in centimorgans with the --cm flag. Alternatively, you can use a MAP file with the genetic distance excluded by adding the flag --map3, i.e. plink --file mydata --map3 In this case, the three columns are expected to be chromosome (1-22, X, Y or 0 if unplaced) rs# or snp identifier Base-pair position (bp units) Base-pair positions are expected to correspond to positive integers within the range of typical human chromosome sizes.
1 snp1 0 1
1 snp2 0 2
1 snp3 0 3
格式说明链接:http://zzz.bwh.harvard.edu/plink/data.shtml#ped
bed格式的文件, 主要包括SNP的信息, 包括个体ID, 系谱信息, 表型和SNP的分型信息.
1, 数据没有行头, 空格或者tab隔开的文件
2, 必须要有六列, 包括系谱信息, 表型信息
3, 上面六列, 必须要有, 如果没有相关数据, 用0表示.
英文格式说明
As well as the --file command described above, PED and MAP files can be specified separately, if they have different names:
plink --ped mydata.ped --map autosomal.map
Note Loading a large file (100K+ SNPs) can take a while (which is why we suggest converting to binary format). PLINK will give an error message in most circumstances when something has gone wrong.
The PED file is a white-space (space or tab) delimited file: the first six columns are mandatory:
Family ID
Individual ID
Paternal ID
Maternal ID
Sex (1=male; 2=female; other=unknown)
Phenotype
The IDs are alphanumeric: the combination of family and individual ID should uniquely identify a person. A PED file must have 1 and only 1 phenotype in the sixth column. The phenotype can be either a quantitative trait or an affection status column: PLINK will automatically detect which type (i.e. based on whether a value other than 0, 1, 2 or the missing genotype code is observed).
1 1 0 0 1 0 G G 2 2 C C
1 2 0 0 2 0 A A 0 0 A C
1 3 1 2 1 2 0 0 1 2 A C
2 1 0 0 1 0 A A 2 2 0 0
2 2 0 0 2 2 A A 2 2 0 0
2 3 1 2 1 2 A A 2 2 A A
ped格式是1 1 2 2 的格式转化为0 1 2
这里1 1之间有空格
test1.ped
1 1 0 0 1 0 1 1 2 2 1 1
1 2 0 0 2 0 2 2 0 0 2 1
1 3 1 2 1 2 0 0 1 2 2 1
2 1 0 0 1 0 1 1 2 2 0 0
2 2 0 0 2 2 2 2 2 2 0 0
2 3 1 2 1 2 1 1 2 2 1 1
test1.map
1 snp1 0 1
1 snp2 0 2
1 snp3 0 3
plink命令行
plink --file test2 --recodeA
结果:
FID IID PAT MAT SEX PHENOTYPE snp1_2 snp2_1 snp3_2
1 1 0 0 1 -9 0 0 0
1 2 0 0 2 -9 2 NA 1
1 3 1 2 1 2 NA 1 1
2 1 0 0 1 -9 0 0 NA
2 2 0 0 2 2 2 0 NA
2 3 1 2 1 2 0 0 0
可以看出, 表型值缺失的部分变为了"-9", 基因型值缺失的部分变为了NA, snp的major变为了0, snp的minor变为了2, 杂合变为了1.
ped格式是11 22 的格式转化为0 1 2
这里11中间没有空格
test2.ped
1 1 0 0 1 0 11 22 11
1 2 0 0 2 0 22 00 21
1 3 1 2 1 2 00 12 21
2 1 0 0 1 0 11 22 00
2 2 0 0 2 2 22 22 00
2 3 1 2 1 2 11 22 11
test2.map
1 snp1 0 1
1 snp2 0 2
1 snp3 0 3
命令:
结果:plink.raw
FID IID PAT MAT SEX PHENOTYPE snp1_2 snp2_1 snp3_2
1 1 0 0 1 -9 0 0 0
1 2 0 0 2 -9 2 NA 1
1 3 1 2 1 2 NA 1 1
2 1 0 0 1 -9 0 0 NA
2 2 0 0 2 2 2 0 NA
2 3 1 2 1 2 0 0 0
ped格式是A T C G 的格式转化为0 1 2
这里A A之间有空格
test3.ped
1 1 0 0 1 0 A A T T G G
1 2 0 0 2 0 G G 0 0 A G
1 3 1 2 1 2 0 0 A T A G
2 1 0 0 1 0 A A A T 0 0
2 2 0 0 2 2 G G T T 0 0
2 3 1 2 1 2 A A T T G G
test3.map
1 snp1 0 1
1 snp2 0 2
1 snp3 0 3
plink命令行
plink --file test3 --recodeA
结果不变
FID IID PAT MAT SEX PHENOTYPE snp1_2 snp2_1 snp3_2
1 1 0 0 1 -9 0 0 0
1 2 0 0 2 -9 2 NA 1
1 3 1 2 1 2 NA 1 1
2 1 0 0 1 -9 0 0 NA
2 2 0 0 2 2 2 0 NA
2 3 1 2 1 2 0 0 0
ped格式是AT CG 的格式转化为0 1 2
这里AT之间没有空格
test3.ped
1 1 0 0 1 0 AA TT GG
1 2 0 0 2 0 GG 00 AG
1 3 1 2 1 2 00 AT AG
2 1 0 0 1 0 AA AT 00
2 2 0 0 2 2 GG TT 00
2 3 1 2 1 2 AA TT GG
test3.map
1 snp1 0 1
1 snp2 0 2
1 snp3 0 3
plink命令行
plink --file test4 --recodeA
结果不变
FID IID PAT MAT SEX PHENOTYPE snp1_2 snp2_1 snp3_2
1 1 0 0 1 -9 0 0 0
1 2 0 0 2 -9 2 NA 1
1 3 1 2 1 2 NA 1 1
2 1 0 0 1 -9 0 0 NA
2 2 0 0 2 2 2 0 NA
2 3 1 2 1 2 0 0 0
ped格式是A T 1 2 的格式转化为0 1 2
这里AT和12都包含
test3.ped
1 1 0 0 1 0 G G 2 2 C C
1 2 0 0 2 0 A A 0 0 A C
1 3 1 2 1 2 0 0 1 2 A C
2 1 0 0 1 0 G G 2 2 0 0
2 2 0 0 2 2 A A 2 2 0 0
2 3 1 2 1 2 G G 2 2 C C
test3.map
1 snp1 0 1
1 snp2 0 2
1 snp3 0 3
plink命令行
plink --file test4 --recodeA
结果不变
FID IID PAT MAT SEX PHENOTYPE snp1_2 snp2_1 snp3_2
1 1 0 0 1 -9 0 0 0
1 2 0 0 2 -9 2 NA 1
1 3 1 2 1 2 NA 1 1
2 1 0 0 1 -9 0 0 NA
2 2 0 0 2 2 2 0 NA
2 3 1 2 1 2 0 0 0
ID:R-breeding
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