Recent questions tagged extract

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extract data column-wise from text file using Java

I'm working under Java and want to extract data according to column from a text file. "myfile.txt" contents: ID ... , please any hint or help? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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extract - Extracting points with polygon in R

I'm trying to extract points by a polygon using the 'sp' package function 'over' library(sp) library( ... polygon contains 100s of features? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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extract - Save tiff CCITTFaxDecode (from PDF page) using iText and Java

I'm using iText to extract embedded images and save them as separate files. The .jpg and .png files come out ok, ... ToString() (which is in C#) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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extract value from xml in mysql

i am trying to extract values from xml. i am getting problem when xml has attribute. like following Stored Procedure ... '); END $$ DELIMITER ; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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855 views

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extract substring in java using regex

I need to extract "URPlus1_S2_3" from the string: "Last one: http://abc.imp/Basic2#URPlus1_S2_3," using regular ... regex for the first time. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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683 views

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extract RGB channels from a jpeg image in R

In order to classify a jpeg image in R, I would like to get the RGB values of each pixel. My question: Is ... channels from a jpeg image in R ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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