In data(A, package = "ASMap") : data set ‘A’ not found

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In data(A, package = "ASMap") : data set ‘A’ not found

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Hi Pallavi, welcome!

ASMap doesn't have a dataset named A
these are the datasets that come with the package

  • mapDH : A constructed genetic linkage map for a Doubled Haploid population in the form of an R/qtl object. The genetic linkage map contains a total of 599 markers spanning 23 linkage groups genotyped across 218 individuals. The linkage map contains a small set of co-located markers and a small set of markers with excessive segregation distortion
  • mapDHf : Anunconstructed version of mapDH in the form a data frame. The data frame has dimensions 599 × 218 and the rows (markers) have been randomized.
  • mapBCu : An unconstructed set of markers for a backcross population in the form of an R/qtl object. The marker set contains a total of 3023 markers genotyped on 326 individuals. This marker set can be used in conjunction with the detailed process presented in chapter 3 to construct a genetic linkage map.
  • mapBC : A constructed linkage map of mapBCu in the form of an R/qtl object. The linkage map contains a total of 3019 markers genotyped on 300 individuals.
  • mapF2 : A simulated linkage map for a self-pollinated F2 population consisting of 700 markers spanning 7 linkage groups genotyped across 250 individuals.
3

Hello Andresrcs
Thank you so much for your msg.
Actually "A" is my data file name. I am not able to load my data for running the ASMap tool.

4

What format has your data file? That command is for loading a dataset that is included in the package itself, not for loading data from a file.

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I have used csv file format and the command was read.csv to upload the data file

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I'm confused, if you have used read.csv() then your data is already loaded, what are you trying to accomplish by running this command?

data(A, package = "ASMap")

If you already have a dataframe called A loaded in memory, why are you trying to load it again from the package?

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Actually I want to run ASMap for constructing linkage map. For this I have prepared an input file named Demo_100 which I have assigned "A", after uploading the file using command read.csv. Then to run the tool, as mentioned in the user mannual, i have used the first command of ASMap, data(A, package = "ASMap").
As I am a beginner in R studio, I am not able to trace where I am doing wrong!

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Well, you can skip that step because that command is for loading sample data that comes with the package, you already have your own data, that you have loaded using read.csv()

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