Question

“我的Dash应用程序”当前除索引页面外还有两个页面，它由以下文件组成。

if len(K) == 0: #CM is the correlation matrix, we have no variables conditioning (K has 0 length)
    r = CM[i, j] #r is the partial correlation of i and j 
elif len(K) == 1: #we have one variable conditioning, not very different from the previous version except for the fact that i have not to compute the correlations matrix since i start from it, and pandas provide such a feature on a DataFrame
    r = (CM[i, j] - CM[i, K] * CM[j, K]) / math.sqrt((1 - math.pow(CM[j, K], 2)) * (1 - math.pow(CM[i, K], 2))) #r is the partial correlation of i and j given K
else: #more than one conditioning variable
    CM_SUBSET = CM[np.ix_([i]+[j]+K, [i]+[j]+K)] #subset of the correlation matrix i'm looking for
    PM_SUBSET = np.linalg.pinv(CM_SUBSET) #constructing the precision matrix of the given subset
    r = -1 * PM_SUBSET[0, 1] / math.sqrt(abs(PM_SUBSET[0, 0] * PM_SUBSET[1, 1]))
r = min(0.999999, max(-0.999999,r)) 
res = math.sqrt(n - len(K) - 3) * 0.5 * math.log1p((2*r)/(1-r)) #estimating partial correlation with fisher's transofrmation
return 2 * (1 - norm.cdf(abs(res))) #obtaining p-value

我在应用程序的第1页上有一个滑块，即在app1.py中。滑块值是在应用程序第1页上进行绘图的回调的输入。

如果我想对应用程序第2页中的另一个回调使用相同的滑块值来绘制其他内容。如何将滑块值传递到app2.py？

Answer 1

您可以将其值存储在dcc.Store（https://dash.plot.ly/dash-core-components/store ）组件（在app1中）：

@app.callback(
Output('dcc_store_compoenent_id', 'data')
[Inputs('your_slider_id', 'value')]
def store_slider_value_in_dcc_store(slider_value):
    return {'slider_app1_value': slider_value}

然后，您可以根据需要触发回调（在app2中），并使用dcc.State组件上的State访问数据：

@app.callback(
Output('the_output', 'you_want')
[Inputs('whatever', 'you_want')]
[State('dcc_store_compoenent_id', 'data'])
def func(input_value, data):
    slider_value = data['slider_app1_value']
    ...

在两页中短跑打印共享回调输入

1 个答案: