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如何将 excel 中数据按坐标读取并显示到其他屏幕? - App Inventor 2 中文...

...有excel操作相关功能,也没有现成的拓展。 目前只能处理csv(不带样式的excel)或txt纯文本数据,可考虑将excel保存为csv文件,将csv文件导入“数据文件”组件,从组件中获取相关数据。 其中,数据结构的设计是关键,得好好考...
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AppInventor如何实现通过扫二维码导入表格数据 - App Inventor 2 拓展 - 清...

...上面条码组件的事件中获取。 3、访问远程url获取表格csv数据: 使用Web客户端组件访问url获取数据。数据格式建议采用csv(逗号分隔)格式。 4、解析数据并展示: 推荐使用TableView拓展展示csv表格数据。
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Compress files while reading data from STDIN

...ad data as input and redirect the compressed to output file i.e. cat test.csv | gzip > test.csv.gz cat test.csv will send the data as stdout and using pipe-sign gzip will read that data as stdin. Make sure to redirect the gzip output to some file as compressed data will not be written to the t...
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How to find where a method is defined at runtime?

...#crime> If you're on Ruby 1.9+, you can use source_location require 'csv' p CSV.new('string').method(:flock) # => #<Method: CSV#flock> CSV.new('string').method(:flock).source_location # => ["/path/to/ruby/1.9.2-p290/lib/ruby/1.9.1/forwardable.rb", 180] Note that this won't work...
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Java switch statement multiple cases

...ted Sep 15 '16 at 14:19 Pascal Tänzer 3777 bronze badges answered Dec 29 '11 at 6:51 Santtu KähkönenSanttu ...
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绘画动画组件 · App Inventor 2 中文网

...) 在画布上给定坐标处绘制一个点。 画多边形(坐标点列表,填充) 在画布上绘制多边形。 坐标点列表 应该是一个包含子列表(其中两个数字代表坐标)的列表。 第一个点和最后一个点不需要相同。例如 ((x1 y1) (x2 y2) ...
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Find the min/max element of an Array in JavaScript

... Nov 18 '12 at 14:00 Linus UnnebäckLinus Unnebäck 14k99 gold badges5959 silver badges7575 bronze badges ...
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Principal component analysis in Python

.............................. if __name__ == "__main__": import sys csv = "iris4.csv" # wikipedia Iris_flower_data_set # 5.1,3.5,1.4,0.2 # ,Iris-setosa ... N = 1000 K = 20 fraction = .90 seed = 1 exec "\n".join( sys.argv[1:] ) # N= ... np.random.seed(seed) ...
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Warning message: In `…` : invalid factor level, NA generated

... If you are reading directly from CSV file then do like this. myDataFrame <- read.csv("path/to/file.csv", header = TRUE, stringsAsFactors = FALSE) share | ...
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Makefile经典教程(入门必备) - C/C++ - 清泛网 - 专注IT技能提升

...“MAKECMDGOALS”,这个变量中会存放你所指定的终极目标的列表,如果在命令行上,你没有指定目标,那么,这个变量是空值。这个变量可以让你使用在一些比较特殊的情形下。比如下面的例子: sources = foo.c bar.c ifneq ( $(MAKECM...