我正在使用snakemake构建工作流程,并希望将其中一个规则回收到两个不同的输入源。输入源可以是source1或source1 + source2,根据输入,输出目录也会有所不同。由于在同一规则中这很复杂,我不想创建完整规则的副本,我想创建两个具有不同输入/输出的规则,但运行相同的命令。
是否有可能使这项工作?我正确地解决了DAG问题,但作业没有通过群集(ERROR : bamcov_cmd not defined
)。
下面的示例(两个规则最后都使用相同的命令):
def bamcov_cmd():
return( (deepTools_path+"bamCoverage " +
"-b {input.bam} " +
"-o {output} " +
"--binSize {params.bw_binsize} " +
"-p {threads} " +
"--normalizeTo1x {params.genome_size} " +
"{params.read_extension} " +
"&> {log}") )
rule bamCoverage:
input:
bam = file1+"/{sample}.bam",
bai = file1+"/{sample}.bam.bai"
output:
"bamCoverage/{sample}.filter.bw"
params:
bw_binsize = bw_binsize,
genome_size = int(genome_size),
read_extension = "--extendReads"
log:
"bamCoverage/logs/bamCoverage.{sample}.log"
benchmark:
"bamCoverage/.benchmark/bamCoverage.{sample}.benchmark"
threads: 16
run:
bamcov_cmd()
rule bamCoverage2:
input:
bam = file2+"/{sample}.filter.bam",
bai = file2+"/{sample}.filter.bam.bai"
output:
"bamCoverage/{sample}.filter.bw"
params:
bw_binsize = bw_binsize,
genome_size = int(genome_size),
read_extension = "--extendReads"
log:
"bamCoverage/logs/bamCoverage.{sample}.log"
benchmark:
"bamCoverage/.benchmark/bamCoverage.{sample}.benchmark"
threads: 16
run:
bamcov_cmd()
答案 0 :(得分:0)
你在python中提到了什么。 这取决于你在文件中有JUST python代码,还是python和Snakemake。 我将首先回答这个问题,然后我会有一个跟进回复,因为我希望你以不同的方式进行设置,所以你不必这样做。
只是Python:
from fileContainingMyBamCovCmdFunction import bamcov_cmd
rule bamCoverage:
...
run:
bamcov_cmd()
在视觉上,看看我是如何在此文件中执行此操作,以引用对buildHeader和buildSample的访问。这些文件由Snakefile调用。它应该对你有用。 https://github.com/LCR-BCCRC/workflow_exploration/blob/master/Snakemake/modules/py_buildFile/buildFile.py
编辑2017-07-23 - 更新以下代码段以反映用户评论
Snakemake和Python:
include: "fileContainingMyBamCovCmdFunction.suffix"
rule bamCoverage:
...
run:
shell(bamcov_cmd())
编辑结束
如果该功能真的特定于bamCoverage调用,如果您愿意,可以将其放回规则中。这意味着它不会在其他地方被调用,这可能是真的。 使用'。'注释文件时要小心。符号,我使用'_',因为我发现通过这种方式防止创建循环依赖更容易。 此外,如果您最终单独留下这两个规则,最终可能会出现歧义错误。 http://snakemake.readthedocs.io/en/latest/snakefiles/rules.html?highlight=ruleorder#handling-ambiguous-rules 在可能的情况下,最佳做法是使规则生成唯一的输出。
至于替代方案,请考虑设置这样的代码吗?
from subprocess import call
rule all:
input:
"path/to/file/mySample.bw"
#OR
#"path/to/file/mySample_filtered.bw"
bamCoverage:
input:
bam = file1+"/{sample}.bam",
bai = file1+"/{sample}.bam.bai"
output:
"bamCoverage/{sample}.bw"
params:
bw_binsize = bw_binsize,
genome_size = int(genome_size),
read_extension = "--extendReads"
log:
"bamCoverage/logs/bamCoverage.{sample}.log"
benchmark:
"bamCoverage/.benchmark/bamCoverage.{sample}.benchmark"
threads: 16
run:
callString= deepTools_path + "bamCoverage " \
+ "-b " + wilcards.input.bam \
+ "-o " + wilcards.output \
+ "--binSize " str(params.bw_binsize) \
+ "-p " + str({threads}) \
+ "--normalizeTo1x " + str(params.genome_size) \
+ " " + str(params.read_extension) \
+ "&> " + str(log)
call(callString, shell=True)
rule filterBam:
input:
"{pathFB}/{sample}.bam"
output:
"{pathFB}/{sample}_filtered.bam"
run:
callString="samtools view -bh -F 512 " + wildcards.input \
+ ' > ' + wildcards.output
call(callString, shell=True)
思想?