1、首先我们打开一张图纸文件。在图纸中我们可以看到坐标的原点在图形的左下方。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/6159252dd42a283461d8f35e55b5c9ea15cebf6d?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2、要修改坐标系我们可以点击菜单栏中的工具选项卡。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/b3b7d0a20cf431adbfa6866c4536acaf2edd986b?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3、在下拉菜单中点击新建Ucs然后点击原点。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/d6ca7bcb0a46f21ff8c09b06f8246b600d33aeeb?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4、点击后坐标轴原点会跟随我们的鼠标,我们在需要的位置点击鼠标左键确定。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/9e3df8dcd100baa10bf982ee4910b912c9fc2e8a?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
5、点击后我们可以看到坐标系的原点发生了改变。此时的坐标是按照我们新建的为参照设置的。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/b151f8198618367ad573ba8820738bd4b21ce5e9?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
6、如果要切换到原来的坐标系,我们可以再次点击工具然后点击下方的命名UCS。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/7af40ad162d9f2d37026e0baa7ec8a136327ccb4?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
7、然后在弹出的ucs窗口中选择世界然后双击或者点击右方的置为当前。完成后点击确定。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/241f95cad1c8a78672338e5b6909c93d70cf504e?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
8、点击确定后我们回到我们原来的坐标系中了 。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/b8389b504fc2d562027c14b8e91190ef76c66c6b?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)