如何将 Image 的起始轴更改为 pyqtgraph？

Question

我想将图像添加到图中的特定轴点 而不是从 0,0 开始。我希望它从特定的 y 轴开始。 例如，我希望图像设置为 0,50

这是我的代码

import pyqtgraph as pg
import numpy as np

ctl_graph = pg.GraphicsLayoutWidget()
spectrogram_plot = ctl_graph.addPlot(row=8, col=0, colspan=2)
histogram_spectrogram = pg.HistogramLUTItem()
histogram_spectrogram.gradient.loadPreset("flame")
spectrogram_img = pg.ImageItem()
random_number_lists = []
random_numbers_1 = np.random.normal(0, 1, 100)
random_numbers_2 = np.random.normal(0, 1, 100)
random_numbers_3 = np.random.normal(0, 1, 100)
random_number_lists.append(random_numbers_1)
random_number_lists.append(random_numbers_2)
random_number_lists.append(random_numbers_3)

spectrogram_img.setImage(random_number_lists.T, autoLevels=False, autoRange=False)
spectrogram_plot.addItem(spectrogram_img)
histogram_spectrogram.setImageItem(spectrogram_img)

# Setting of graph limits
spectrogram_plot.setLimits(xMin=0, xMax=100, yMin=50, yMax=100)
spectrogram_img.scale(np.amax(random_numbers_1)/ random_numbers_1.size, np.amax(random_numbers_2)/random_numbers_2.size)

生成的图像图不是我想要的。 我想要的是开始将图像绘制到 0,50 而不是 0,0

Answer 1

如本例所示：https://github.com/pyqtgraph/pyqtgraph/blob/develop/examples/imageAnalysis.py#L73

spectrogram_img.translate(x0, y0)

应该做的伎俩