使用变量从 bash 运行 IDL 程序
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Running IDL program from bash with variables
提问by Frank Harris
I've written a program in IDL to generate scatter plots based on command line arguments. I can successfully call the program directly in the terminal like this:
我已经用 IDL 编写了一个程序来根据命令行参数生成散点图。我可以像这样直接在终端中成功调用程序：
idl -e "scatterplot_1_2d_file.pro" $infile $outfile $title $xtitle $ytitle $xmin $xmax $ymin $ymax $timescale
idl -e "scatterplot_1_2d_file.pro" $infile $outfile $title $xtitle $ytitle $xmin $xmax $ymin $ymax $timescale
Where $* refer to some string literals typed in. The problem is, I thought I'd be able to just type that very line, putting in variable names in place of the literals, into a bash script, and generate a million scatter plots while I'm on break. Unfortunately, if I do it that way, I get the error:
$* 指的是输入的一些字符串文字。问题是，我想我可以只输入那一行，在 bash 脚本中输入变量名代替文字，并生成一百万个散点图在我休息的时候。不幸的是，如果我这样做，我会收到错误消息：
idl: -e option cannot be specified with batch files
idl: -e 选项不能与批处理文件一起指定
So my next attempt was to try writing those commands to an IDL batch file that I'd then run.
所以我的下一个尝试是尝试将这些命令写入一个 IDL 批处理文件，然后我将运行该文件。
That attempt looks like this:
该尝试如下所示：
#!/bin/bash
indir=/path/to/indir/
outdir=/path/to/outdir/
files=`ls $indir`
batchfile=/path/to/tempbatchfile.pro
echo .r "/path/to/scatterplot_1_2d_file.pro" >> $batchfile
for file in $files
do
name=${file%\.*}
echo scatterplot_1_2d_file $indir$name.txt $outdir$name.jpg $name "Gauge Precipitation (mm)" "NMQ Precipitation (mm)" "*" "*" "*" "*" 2 >> $batchfile
done #done file
echo exit >> $batchfile
idl <<EOF
@/path/to/scatterplot_1_2d_file
EOF
rm $batchfile
I don't know if the bulk of the errors that script generates are relevant, so I'll just post the start and I'll post the rest later if you need it:
我不知道脚本生成的大部分错误是否相关，所以我只会发布开始，如果您需要，我会稍后发布其余的：
[foo]$ bash script_thing.sh
IDL Version 6.3 (linux x86 m32). (c) 2006, Research Systems, Inc.
Installation number: 91418.
Licensed for personal use by XXXXXXXXX only.
All other use is strictly prohibited.
PRO scatterplot_1_2d_file
^
% Programs can't be compiled from single statement mode.
At: /path/to/scatterplot_1_2d_file.pro, Line 1
% Attempt to subscript ARGS with <INT ( 1)> is out of range.
% Execution halted at: $MAIN$
% Attempt to subscript ARGS with <INT ( 2)> is out of range.
% Execution halted at: $MAIN$
% Attempt to subscript ARGS with <INT ( 3)> is out of range.
% Execution halted at: $MAIN$
% Attempt to subscript ARGS with <INT ( 4)> is out of range.
% Execution halted at: $MAIN$
% Attempt to subscript ARGS with <INT ( 5)> is out of range.
% Execution halted at: $MAIN$
% Attempt to subscript ARGS with <INT ( 6)> is out of range.
% Execution halted at: $MAIN$
% Attempt to subscript ARGS with <INT ( 7)> is out of range.
% Execution halted at: $MAIN$
% Attempt to subscript ARGS with <INT ( 8)> is out of range.
% Execution halted at: $MAIN$
% Attempt to subscript ARGS with <INT ( 9)> is out of range.
% Execution halted at: $MAIN$
I don't know if I'm just trying to do something that can't be done, but it doesn't SEEM like it. Any advice?
我不知道我是否只是在尝试做一些无法完成的事情，但它似乎并不喜欢。有什么建议吗？
采纳答案by mgalloy
There are two ways to go about this: using COMMAND_LINE_ARGSor constructing a valid IDL routine call. This routine uses both:
有两种方法可以解决这个问题：使用COMMAND_LINE_ARGS或构建有效的 IDL 例程调用。此例程同时使用：
pro test, other_args
compile_opt strictarr
args = command_line_args(count=nargs)
help, nargs
if (nargs gt 0L) then print, args
help, other_args
if (n_elements(other_args) gt 0L) then print, other_args
end
Call it from the command line in either of the following two ways:
通过以下两种方式之一从命令行调用它：
Desktop$ idl -e "test" -args $MODE
IDL Version 8.2, Mac OS X (darwin x86_64 m64). (c) 2012, Exelis Visual Information Solutions, Inc.
Installation number: 216855.
Licensed for use by: Tech-X Corporation
% Compiled module: TEST.
NARGS LONG = 1
test
OTHER_ARGS UNDEFINED = <Undefined>
Desktop$ idl -e "test, '$MODE'"
IDL Version 8.2, Mac OS X (darwin x86_64 m64). (c) 2012, Exelis Visual Information Solutions, Inc.
Installation number: 216855.
Licensed for use by: Tech-X Corporation
% Compiled module: TEST.
NARGS LONG = 0
OTHER_ARGS STRING = 'test'
test
回答by Paused until further notice.
I don't know IDL, but here are fixes for your Bash script that are likely to help:
我不知道 IDL，但这里有可能对您的 Bash 脚本有所帮助的修复程序：
#!/bin/bash
indir=/path/to/indir/
outdir=/path/to/outdir/
# (commented out) files=`ls $indir` # no, just no
batchfile=/path/to/tempbatchfile.pro
echo ".r /path/to/scatterplot_1_2d_file.pro" > "$batchfile" # overwrite the file on the first write, put everything inside the quotes
for file in "$indir/"*
do
name=${file%\.*}
echo "scatterplot_1_2d_file $indir$name.txt $outdir$name.jpg $name Gauge Precipitation (mm) NMQ Precipitation (mm) * * * * 2" # quote the whole thing once, it's simpler and echo doesn't do anything differently
done >> "$batchfile" # do all the output from the loop
echo exit >> "$batchfile"
# *** where does idl learn the location of "$batchfile"? ***
idl <<EOF
@/path/to/scatterplot_1_2d_file
EOF
rm "$batchfile"
To fix your command line version, use quoting:
要修复您的命令行版本，请使用引用：
idl -e "scatterplot_1_2d_file.pro" "$infile" "$outfile" "$title" "$xtitle" "$ytitle" "$xmin" "$xmax" "$ymin" "$ymax" "$timescale"
Always quote variables when they're expanded.
当变量被扩展时总是引用变量。
