fig,ax=plt.subplots()# 创建一些数据ax.plot([1,2,3],[1,2,3],'ro-')# 创建自定义图例元素red_patch=mpatches.Patch(color='red',label='Red data from how2matplotlib.com')line_patch=mpatches.Patch(color='blue',label='Blue line from how2matplotlib.com')# 使用set_label()方法设置标...
importmatplotlib.pyplotaspltimportnumpyasnp# 生成数据x=np.linspace(0,10,10)y=np.sin(x)# 绘制折线图plt.plot(x,y,marker='o')# 调整 Label 位置foriinrange(len(x)):plt.annotate(f'({x[i]:.1f},{y[i]:.1f})',(x[i],y[i]),textcoords="offset points",xytext=(0,5),ha='center...
1)defupdate(frame):x=np.linspace(0,2*np.pi,100)y=np.sin(x+frame/10)line.set_data(x,y)ax.xaxis.set_label_text(f"Phase:{frame/10:.2f}- how2matplotlib.com")ax.yaxis.set_label_text(f"Amplitude:{np.max(y):.2f}- how2matplotlib.com")returnline,frommatplotlib.animationimpo...
当图线中某些特殊地方需要标注时,我们可以使用 annotation. matplotlib 中的 annotation 有两种方法, 一种是用 plt 里面的 annotate,一种是直接用 plt 里面的 text 来写标注. 首先,我们在坐标轴中绘制一条直线. import matplotlib.pyplot as plt import numpy as np x = np.linspace(-3, 3, 50) y = 2*x...
points = np.array(shape['points'], np.int32)if(len(points)<3):print("单点polygon",points)else: new_shapes.append(shape) data["shapes"]=new_shapes# data_small["shapes"]=new_shapes_smallwithopen(json_file,'w',encoding='utf-8')asf: ...
/usr/bin/env pythonimportargparseimportjsonimportmatplotlib.pyplotasplt from labelmeimportutils defmain():parser=argparse.ArgumentParser()parser.add_argument('json_file')args=parser.parse_args()json_file=args.json_file data=json.load(open(json_file))# 加载json文件...
= PIL.ImageDraw.ImageDraw(viz) font_path = osp.join( osp.dirname(matplotlib.__file_...
import matplotlib.pyplot as plt doc_path = "test.jpg" def np2base64(image_np): image = cv2.imencode('.jpg', image_np)[1] base64_str = str(base64.b64encode(image))[2:-1] return base64_str def BGR2RGB(img): pilimg = img.copy() ...
# visualization_xml_OD.pyfromlxmlimportetreeimportcv2ascvimportmatplotlib.pyplotaspltfromcopyimportdeepcopyimportnumpyasnpdefparse_xml_to_dict(xml):""" 将xml文件解析成字典形式,参考tensorflow的recursive_parse_xml_to_dict Args: xml: xml tree obtained by parsing XML file contents using lxml.etree ...
pip install opencv-python pip install pyyaml pip install tqdm pip install matplotlib pip install pandas 遇到ImportError: libGL.so.1: cannot open shared object 错误时,执行以下命令: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 pip install opencv-python-headless 在终端中运行 train.py 文件,即可...