如果更改 y 列的线条样式，则在多图中更改网格线

Question

我正在尝试在 png 文件中绘制多图。多图有 8 个图。每个图都有两个 y 轴，网格将用 ls 0 显示。一切正常，直到我更改图的线宽。当我直接在绘图中更改线型或线宽时，其余绘图中的网格以新的线宽和颜色显示。我在 Windows 7 MinGW 中使用 GNU Plot 版本 5。

我已经尝试过在网格中设置线条样式，如下所示：

1。 设置样式第 4 行 lc rgb 'black' lt 0 设置网格 xtics ytics y2tics ls 4

1. 在绘图时设置线宽，如下所示： input_filename 使用 11:9 线轴 x1y2 lc rgb 'green' lw 2 title 'Plot-5'

但是没有任何效果。以下是完整代码：

#----------------
#input variables
#----------------
#input_filename 
#png_filename


#----------------
# Sample Command: 
# 
#   gnuplot -e "input_filename='test.csv'" -e "png_filename='test.png'" gnuplotMultiSample_A.plt
#
#----------------



#----------------
# Code Starts
#----------------

reset

set datafile separator ","
set term png
set output png_filename  

set size 1,2
set terminal png size 2560,1920

    set ytics nomirror
    set y2tics


    set multiplot layout 4,2 columnsfirst title png_filename

        set style line 1 lc rgb 'red' lt 3 
        set style line 2 lc rgb 'blue' lt 2 lw 2
        set style line 3 lc rgb 'green' lt 1 
        set style line 4 lc rgb 'black' lt 0 


        unset grid
        #set grid xtics ytics y2tics lt 0  lc rgb "#880000"
        set grid xtics ytics y2tics ls 4

        plot input_filename using 11:12 with lines axes x1y1 ls 1 title 'Actual', \
                                    input_filename using 11:1 with lines axes x1y2 lc rgb 'green' title 'Plot-1'  

        plot input_filename using 11:12 with lines axes x1y1 ls 1 title 'Actual', \
                                    input_filename using 11:3 with lines axes x1y2 ls 2 title 'Plot-2'  

        plot input_filename using 11:12 with lines axes x1y1 ls 1 title 'Actual', \
                                    input_filename using 11:5 with lines axes x1y2 ls 3 title 'Plot-3'  

        plot input_filename using 11:12 with lines axes x1y1 ls 1 title 'Actual', \
                                    input_filename using 11:7 with lines axes x1y2 ls 4 title 'Plot-4'  



        plot input_filename using 11:12 with lines axes x1y1 ls 1 title 'Actual', \
                                    input_filename using 11:9 with lines axes x1y2 lc rgb 'green' title 'Plot-5'  

        plot input_filename using 11:12 with lines axes x1y1 ls 1 title 'Actual', \
                                    input_filename using 11:11 with lines axes x1y2 lc rgb 'green' title 'Plot-6'  

        plot input_filename using 11:12 with lines axes x1y1 ls 1 title 'Actual', \
                                    input_filename using 11:1 with lines axes x1y2 lc rgb 'green' title 'Plot-7'  

        plot input_filename using 11:12 with lines axes x1y1 ls 1 title 'Actual', \
                                    input_filename using 11:3 with lines axes x1y2 lc rgb 'green' title 'Plot-8'  

        unset grid

    unset multiplot

使用 pngcairo。以下是最终代码供参考。谢谢肖尔施。

#----------------
#input variables
#----------------
#input_filename 
#png_filename


#----------------
# Sample Command: 
# 
#   gnuplot -e "input_filename='test.csv'" -e "png_filename='test.png'" gnuplotMultiSample_A.plt
#
#----------------



#----------------
# Code Starts
#----------------

reset


set term pngcairo size 2560,1920
#set terminal pngcairo dashed
#set termoption dashed

set datafile separator ","
#set term png
set output png_filename  

set size 1,2
#set terminal png size 2560,1920

    set ytics nomirror
    set y2tics


    set multiplot layout 4,2 columnsfirst title png_filename

        set style line 81 lc rgb 'red' lt 3 lw 1 
        set style line 82 lc rgb 'blue' lt 2 lw 2
        set style line 83 lc rgb 'green' lt 1 lw 1 
        set style line 84 lc rgb 'black' lt 0 lw 1


        unset grid
        #set grid xtics ytics y2tics lt 0  lc rgb "#880000"
        #set grid xtics ytics y2tics lt 1 lw 1 lc rgb "#880000"     
                                        # Line type 1 works for Png but not lt 0. As per the guidelines
                                        # trying using "set terminal pngcairo dashed" as per the site: 
                                        #           http://stackoverflow.com/questions/19412382/gnuplot-line-types/19420678#19420678
                                        #           http://stackoverflow.com/questions/34689654/grid-lines-are-changed-in-multiplot-if-lines-styles-of-y-column-is-changed/34751992#34751992
        set grid xtics ytics y2tics lt 0 lw 1 lc rgb "#880000"

        plot input_filename using 11:12 with lines axes x1y1 ls 81 title 'Actual', \
                                    input_filename using 11:1 with lines axes x1y2 lc rgb 'green' title 'Plot-1'  

        plot input_filename using 11:12 with lines axes x1y1 ls 81 title 'Actual', \
                                    input_filename using 11:3 with lines axes x1y2 ls 82 title 'Plot-2'  

        plot input_filename using 11:12 with lines axes x1y1 ls 81 title 'Actual', \
                                    input_filename using 11:5 with lines axes x1y2 ls 83 title 'Plot-3'  

        plot input_filename using 11:12 with lines axes x1y1 ls 81 title 'Actual', \
                                    input_filename using 11:7 with lines axes x1y2 ls 84 title 'Plot-4'  



        plot input_filename using 11:12 with lines axes x1y1 ls 81 title 'Actual', \
                                    input_filename using 11:9 with lines axes x1y2 lc rgb 'green' title 'Plot-5'  

        plot input_filename using 11:12 with lines axes x1y1 ls 81 title 'Actual', \
                                    input_filename using 11:11 with lines axes x1y2 lc rgb 'green' title 'Plot-6'  

        plot input_filename using 11:12 with lines axes x1y1 ls 81 title 'Actual', \
                                    input_filename using 11:1 with lines axes x1y2 lc rgb 'green' title 'Plot-7'  

        plot input_filename using 11:12 with lines axes x1y1 ls 81 title 'Actual', \
                                    input_filename using 11:3 with lines axes x1y2 lc rgb 'green' title 'Plot-8'  

        unset grid

    unset multiplot

Answer 1

我相信您的问题与您设置的线条样式有关：

set style line 1 lc rgb 'red' lt 3 
set style line 2 lc rgb 'blue' lt 2 lw 2
set style line 3 lc rgb 'green' lt 1 
set style line 4 lc rgb 'black' lt 0

由于有预定义的线型，这些线型可能无法正常工作，最终会在多图环境中弄乱您的网格线。更具体地说，是选项lw 2 打破了您的网格线。

Printing a test output为png terminal可以看到有80种预定义的线型：

因此，将以上行改为

set style line 81 lc rgb 'red' lt 3 
set style line 82 lc rgb 'blue' lt 2 lw 2
set style line 83 lc rgb 'green' lt 1 
set style line 84 lc rgb 'black' lt 0

并修改脚本中的plot 命令以引用这些线型编号，您将得到以下图：

---

调试备注：

1. 真正搞砸情节的是lw 2 选项。奇怪的是，如果您使用lw 3 指定网格线，它们不会受到影响（但也会比您想要的更粗）。

2. 各种组合中的dashtype 选项似乎也无法解决您的问题。对于网格线，它被完全忽略。

3. 除一种预定义的线型外，任何其他线型都会导致此问题。您可以选择lt 8 并获得实心黑色网格线。

4. 您可以考虑使用不同的终端：

   `set terminal pngcairo` 
   

   使用不同的终端，您的原始脚本会按预期运行。