我在IDL中编写了一个程序,用于根据命令行参数生成散点图.我可以直接在终端中成功调用程序,如下所示:
idl -e"scatterplot_1_2d_file.pro"$ infile $ outfile $ title $ xtitle $ ytitle $ xmin $ xmax $ ymin $ ymax $ timescale
其中$*引用了一些输入的字符串文字.问题是,我以为我只能输入那一行,将变量名代替文字,放入bash脚本,并生成一百万个散点图我在休息时.不幸的是,如果我这样做,我得到错误:
idl:-e选项不能用批处理文件指定
所以我的下一次尝试是尝试将这些命令写入我随后运行的IDL批处理文件.
这种尝试看起来像这样:
#!/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 $batchfile
我不知道脚本生成的大部分错误是否相关,所以我只是发布开始,如果需要,我会稍后发布其余的:
[foo]$ bash script_thing.sh
IDL Version …我正在写一个标题,timedate.h,其开头如下:
#ifndef _TIMEDATE_H_
#define _TIMEDATE_H_
int timetounixtime(int year, int month, int day, int hour, int minute, int second)
{
struct tm *time;
time->tm_year = year;
time->tm_mon = month;
time->tm_mday = day;
time->tm_hour = hour;
time->tm_min = minute;
time->tm_sec = second;
return mktime(time);
}
/*...*/
#endif
然后将其包含在我的一个主要.c文件中,如下所示:
#include <stdio.h>
#include <string.h>
#include <sys/time.h>
#include "timedate.h"
int main(int argv, char **argc)
{
/*...*/
}
在我看来,这应该工作,因为在调用timedate.h之前,time.h包含在主代码中.但是,当我制作时,我收到以下错误:
XXXXXXXXXX$ make
gcc file2nav.c -o file2nav
In file included from file2nav.c:4:0:
timedate.h: In function ‘timetounixtime’:
timedate.h:10:7: error: …我相信我正在处理某种被破坏的库.我写了以下代码:
//helloworld.c
#include <stdio.h>
int main()
{
printf("Hello, world!\n");
return 0;
}
并使用以下命令编译它:
gcc helloworld.c
我得到的错误很多.这是一个示例:
/usr/include/stdio.h:510: error: expected ‘)’ before ‘*’ token
/usr/include/stdio.h:514: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘__wur’
/usr/include/stdio.h:517: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘__THROW’
/usr/include/stdio.h:524: error: expected declaration specifiers before ‘__END_NAMESPACE_C99’
/usr/include/stdio.h:534: error: expected ‘)’ before ‘*’ token
/usr/include/stdio.h:540: error: storage class specified for parameter ‘getchar’
/usr/include/stdio.h:541: error: expected declaration specifiers before ‘__END_NAMESPACE_STD’
/usr/include/stdio.h:553: error: storage class specified for …我研究这个问题越多,我似乎就越困惑.这是一个家庭作业问题,涉及增加我们教授给我们的代码.我知道这个问题与const关键字有关,还有一些令人困惑的新应用程序.
有一个泛型类Object,从中继承了几个子类(Sphere,Cone,Polygon).以下是Object中的类:
public: // computational members
// return t for closest intersection with ray
virtual float intersect(const Ray &ray) const = 0;
// return color for intersection at t along ray r
virtual const Vec3 appearance(const World &w,
const Ray &r, float t) const = 0;
//The following function is added by me
virtual const Vec3 normal(Vec3 p);
};
我添加了最终功能,正常.
因此,在Sphere类中,这样实现:
const Vec3 Sphere::normal(Vec3 p)
{
return (p - d_center).normalize();
}
当我'make'时,我收到以下错误:
Appearance.cpp: In member function ‘const Vec3 Appearance::eval(const World&, …