编辑 SVG 矩阵

Question

问题：我发现父组变换矩阵影响了子矩阵，我尝试添加父和子id road-41 矩阵变成（2.0124438,0,0,2,-49.432502,0），好像错了，如何将矩阵添加在一起以便我可以删除父 g 标签？

例如

<g transform="matrix(1.0044354,0,0,1,-21.976973,0)">
    <g id="road-41" fill="#9b9b9b" transform="matrix(1.0080084,0,0,1,-27.455529,0)">
        <path fill="#212121" d="m 2819.7266,4083.3672 v 34.4824 h 283.8027 v -34.4824 z" id="path724" />
        <path d="m 2819.7266,4112.7559 v 1.9921 h 283.8027 v -1.9921 z" id="path726" />
        <path d="m 2819.7266,4086.4688 v 1.9921 h 283.8027 v -1.9921 z" id="path728" />
        <rect x="-3084.6294" y="-4101.604" width="51.900002" height="1.9914912" transform="scale(-1)" id="rect730" />
        <rect x="-2996.7295" y="-4101.604" width="51.900002" height="1.9914912" transform="scale(-1)" id="rect732" />
        <rect x="-2908.8296" y="-4101.604" width="51.900002" height="1.9914912" transform="scale(-1)" id="rect734" />
    </g>
    <g id="road-42" fill="#9b9b9b" transform="matrix(-1.0014051,0,0,-0.28449875,3874.6139,4176.3419)">
        <rect x="155.5" y="205.60001" fill="#212121" width="617.09998" height="121.2" id="rect737" />
        <rect x="155.5" y="216.5" width="617.09998" height="7" id="rect739" />
        <rect x="155.5" y="308.89999" width="617.09998" height="7" id="rect741" />
        <rect x="174.39999" y="262.70001" width="51.900002" height="7" id="rect743" />
        <rect x="262.29999" y="262.70001" width="51.900002" height="7" id="rect745" />
        <rect x="350.20001" y="262.70001" width="51.900002" height="7" id="rect747" />
        <rect x="438.10001" y="262.70001" width="51.900002" height="7" id="rect749" />
        <rect x="526" y="262.70001" width="51.900002" height="7" id="rect751" />
        <rect x="613.90002" y="262.70001" width="51.900002" height="7" id="rect753" />
        <rect x="701.79999" y="262.70001" width="51.900002" height="7" id="rect755" />
    </g>