Gnuplot限制在一个绘图上绘制多个数据文件的域

我正在使用我编写的.plt文件访问来自许多不同文件的数据。每个数据集只有一个特定的域是重要的。我试图将每个数据集的特定域绘制到一个图形上

每个域中的数据对应一个峰值。我想画出每一个峰，然后用指数衰减函数拟合这些峰

以下是我的打印文件中的代码：

set xlabel "Time (ms)"
set ylabel "voltage"

set title "T1 time for Isopropyl Alcohol"
dir='C:\Users\Daniel\Desktop\College\modern lab\gp501-win64-mingw\gnuplot\bin\data files\isoproply_alc_t1\'
unset key
set style data linespoints
x(v, left, right) = (v >= left && v <= right ? v : 1/0)
plot dir.'nmr-t1-isopropyl-dt10' using (x($0*0.01, 3, 7)):1, \
     dir.'nmr-t1-isopropyl-dt50' using (x($0*0.01, 20, 40)):1, \
     dir.'nmr-t1-isopropyl-dt100' using (x($0*0.01, 40, 60)):1, \
     dir.'nmr-t1-isopropyl-dt150' using (x($0*0.01, 70, 80)):1, \
     dir.'nmr-t1-isopropyl-dt200' using (x($0*0.01, 99, 101)):1, \
     dir.'nmr-t1-isopropyl-dt230' using (x($0*0.01, 114, 116)):1, \
     dir.'nmr-t1-isopropyl-dt250' using (x($0*0.01, 124, 126)):1, \
     dir.'nmr-t1-isopropyl-dt270' using (x($0*0.01, 134, 136)):1, \
     dir.'nmr-t1-isopropyl-dt290' using (x($0*0.01, 144, 146)):1, \
     dir.'nmr-t1-isopropyl-dt300' using (x($0*0.01, 149, 151)):1, \
     dir.'nmr-t1-isopropyl-dt320' using (x($0*0.01, 159, 161)):1, \
     dir.'nmr-t1-isopropyl-dt340' using (x($0*0.01, 169, 171)):1, \
     dir.'nmr-t1-isopropyl-dt360' using (x($0*0.01, 178, 183)):1, \
     dir.'nmr-t1-isopropyl-dt400' using (x($0*0.01, 198, 201)):1, \
     dir.'nmr-t1-isopropyl-dt430' using (x($0*0.01, 213, 217)):1, \
     dir.'nmr-t1-isopropyl-dt470' using (x($0*0.01, 233, 236)):1, \
     dir.'nmr-t1-isopropyl-dt580' using (x($0*0.01, 289, 291)):1, \
     dir.'nmr-t1-isopropyl-dt620' using (x($0*0.01, 309, 311)):1, \
     dir.'nmr-t1-isopropyl-dt650' using (x($0*0.01, 324, 326)):1, \
     dir.'nmr-t1-isopropyl-dt700' using (x($0*0.01, 348, 352)):1, \
     dir.'nmr-t1-isopropyl-dt750' using (x($0*0.01, 374, 376)):1, \
     dir.'nmr-t1-isopropyl-dt800' using (x($0*0.01, 399, 401)):1, \
     dir.'nmr-t1-isopropyl-dt850' using (x($0*0.01, 424, 426)):1, \
     dir.'nmr-t1-isopropyl-dt900.2' using (x($0*0.01, 449.5, 451)):1

设置xlabel“时间（毫秒）”
设置标签“电压”
设置标题“异丙醇的T1时间”
dir='C:\Users\Daniel\Desktop\College\modern lab\gp501-win64-mingw\gnuplot\bin\data files\iproply\u alc\u t1\n
取消设置键
设置样式数据线点
x（v，left，right）=（v>=left&&vGnuplot不支持在单个
plot
命令中为每个数据文件指定单个范围。该命令仅适用于函数

必须使用

语句过滤

中的数据，方法是为所需范围之外的所有点提供值
1/0
，该值将使相应点无效：

left = 3
right = 7
plot 'file.dat' using ($0 > left && $0 < right ? $0 : 1/0):1


使用
unset key

可以使用
set style data lines points
全局设置数据文件的打印样式

所以你的脚本看起来像

set xlabel "Time (ms)"
set ylabel "voltage"
set format y "%s"

set title "T1 time for Isopropyl Alcohol"
dir='C:\Users\Daniel\Desktop\College\modern lab\gp501-win64-mingw\gnuplot\bin\data files\isoproply_alc_t1\'
unset key
set style data linespoints
x(v, left, right) = (v >= left && v <= right ? v : 1/0
plot dir.'nmr-t1-isopropyl-dt10' using (x($0*0.01, 3, 7)):1, \
     dir.'nmr-t1-isopropyl-dt50' using (x($0*0.01, 20, 40)):1, \
     dir.'nmr-t1-isopropyl-dt100' using (x($0*0.01, 40, 60)):1, \
     dir.'nmr-t1-isopropyl-dt150' using (x($0*0.01, 70, 80)):1

设置xlabel“时间（毫秒）”
设置标签“电压”
设置格式y“%s”
设置标题“异丙醇的T1时间”
dir='C:\Users\Daniel\Desktop\College\modern lab\gp501-win64-mingw\gnuplot\bin\data files\iproply\u alc\u t1\n
取消设置键
设置样式数据线点
x（v，left，right）=（v>=left&&v，效果非常好！我得到了一个包含所有峰值的清晰曲线图。我应该从哪里开始，以便拟合指数衰减函数来拟合这些峰值？（它应该看起来像一个包含所有数据点的封套。你必须将衰减曲线中的所有点放在一个文件（或内联数据集）中才能使用“拟合”.一行：
设置表$T1data；replot；unset表；fit I-2*I*exp（-x/T1）$T1data us 1:2 noerr via I，T1
（我假设反转恢复；-））您可能需要调整每个回波的左右限值，因此
x（）
只返回一个值。这是反转恢复！谢谢。我在使用gnuplot时仍然遇到问题。我可能会切换回mathematica！与mathematica不同，gnuplot只是一个绘图程序，不用于数据处理。请记住这一点
set xlabel "Time (ms)"
set ylabel "voltage"
set format y "%s"

set title "T1 time for Isopropyl Alcohol"
dir='C:\Users\Daniel\Desktop\College\modern lab\gp501-win64-mingw\gnuplot\bin\data files\isoproply_alc_t1\'
unset key
set style data linespoints
x(v, left, right) = (v >= left && v <= right ? v : 1/0
plot dir.'nmr-t1-isopropyl-dt10' using (x($0*0.01, 3, 7)):1, \
     dir.'nmr-t1-isopropyl-dt50' using (x($0*0.01, 20, 40)):1, \
     dir.'nmr-t1-isopropyl-dt100' using (x($0*0.01, 40, 60)):1, \
     dir.'nmr-t1-isopropyl-dt150' using (x($0*0.01, 70, 80)):1