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• SNP_SESSION Table shows value null in ERROR_MESSAGE column

  I tried fetching error message from the snp_session table in ODI 12C. I have explicitly inserted erroneous data in order to get an error. But that error is not showing in the error_message column in snp_session table forthe corresponding session id. Please help
• Efficient way to erase and re create a (part of, if possible) subplot inside loop using matplotlib?

  The code below creates a Scatter plot from X and based on values of w,b, creates lines over X.

  I have tried a couple of combinations such as:

  fig.canvas.draw()
  fig.canvas.flush_events()
  
  plt.clf
  plt.cla
  

  But they either seem to plot multiple lines over the plot or Delete the figure / axes.

  Is it possible to plot the Scatter plot only once but the Lines keep changing based on w,b?.

  Below is the code that I have used:

  from sklearn import datasets
  import matplotlib.pyplot as plt
  import numpy as np
  import time
  from IPython.display import display, clear_output
  
  def get_hyperplane_value(x, w, b, offset):
      '''
      Generate Hyperplane for the plot
      '''
      return (-w[0] * x + b + offset) / w[1]
  
  
  def plot_now(ax, W,b):
      '''
      Visualise the results
      '''
      x0_1 = np.amin(X[:, 0])
      x0_2 = np.amax(X[:, 0])
  
      x1_1 = get_hyperplane_value(x0_1, W, b, 0)
      x1_2 = get_hyperplane_value(x0_2, W, b, 0)
  
      x1_1_m = get_hyperplane_value(x0_1, W, b, -1)
      x1_2_m = get_hyperplane_value(x0_2, W, b, -1)
  
      x1_1_p = get_hyperplane_value(x0_1, W, b, 1)
      x1_2_p = get_hyperplane_value(x0_2, W, b, 1)
  
      ax.plot([x0_1, x0_2], [x1_1, x1_2], "y--")
      ax.plot([x0_1, x0_2], [x1_1_m, x1_2_m], "k")
      ax.plot([x0_1, x0_2], [x1_1_p, x1_2_p], "k")
  
      x1_min = np.amin(X[:, 1])
      x1_max = np.amax(X[:, 1])
      ax.set_ylim([x1_min - 3, x1_max + 3])
      
      ax.scatter(X[:, 0], X[:, 1], marker="o", c = y)
      return ax
  
  
  
  X, y = datasets.make_blobs(n_samples=50, n_features=2, centers=2, cluster_std=1.05, random_state=40)
  y = np.where(y == 0, -1, 1)
  
  
  fig = plt.figure(figsize = (7,7))
  ax = fig.add_subplot(1, 1, 1)
  
      
  for i in range(50):
      
      W = np.random.randn(2)
      b = np.random.randn()
      
      ax.cla()
      ax = plot_now(ax, W, b)
      
      display(fig)    
      clear_output(wait = True)
      plt.pause(0.25) 
  
• Custom metric/dimension not visible in GA4 DebugView on item/product-list level

  We're trying to configure GA4 to gather same data that we have in UA.

  The problem is that we cant see custom metrics data on item-level in DebugView. In TagAssistant we can see that data is sent:

  {
    event: "purchase",
    gtm: {uniqueEventId: 10, start: 1651XXX},
    gtag: {
      targets: {
        G-XXX: {_ee: true, _uei: 3, _upi: 2},
        UA-XXX: {
          currency: "PLN",
          country: "PL",
          custom_map: {
            dimension2: "referrer",
            ...
            dimension13: "ecomm_totalvalue",
            metric1: "metric1",
            ...
            metric5: "metric5"
          },
          _uei: 4
        },
        AW-106XXX: {}
      }
    },
    eventModel: {
      transaction_id: "40XXX",
      affiliation: "XXX",
      value: "9.99",
      currency: "PLN",
      tax: "1.87",
      shipping: "0",
      coupon: "",
      items: [
        {
          id: "670",
          name: "Tusz Zamiennik T0711 do Epson (C13T07114010) (Czarny)",
          brand: "XXX",
          category: "Wkłady/Atramentowe/Zamienniki/Tusze/XXX -> Do:E" +
                    "pson",
          quantity: 1,
          price: "9.99",
          coupon: "",
          metric1: "9.99",
          metric2: "9.99",
          metric3: "9.99",
          metric4: "9.99",
          metric5: "9.99"
        }
      ],
      send_to: ""
    }
  }
  

  However, on DebugView side we can see purchase event that:

  • contains all orginal parameters on event level (like transaction_id, shipping etc.)
  • contains all orginal parameters on item level (like item_id, quantity, etc.)

  But our custom metrics are missing

  In the other hand, we tried (with different event) push some custom-dumension data and:

  • they are visible on GA4 DebugView
  • we can create custom dimension in GA4 basing on this data and it works

  I am thinking about:

  1. Creating event-level custom metric to test if it will be passed to GA4 DebugView
  2. Creating item-level custom dimension to test if it will be passed to GA4 DebugView

  However, due to fact that GA requires 24h to make conclusions i decided to ask here for any sugestions why it is not working and what else may i test.
• Need assistance with a footprint chart

  For a project I am working on, I need to implement a linechart with barcharts on each individual node. an example of this can be seen on exocharts.com, anyone know if there's a library I can accomplish this with? Footprint chart
• Python: How to plot numbers on Y-Axis

  This is a financial chart. I wish to plot numbers on canvas(figure) chart graph having x axis as timeseries and y axis as price, example image I have designed on photo editor to make my point also sharing data which will go through for plotting.

  Can anyone please help me how can I achieve this result. This below raw data is resampled in 15 minute also group by price (LTP - Last traded price).

  Sharing raw data Example chart to plot
• Error : VM Exception while processing transaction: revert

  I am getting this error when I am transfering some tokens to the decentralized bank Here is the code

  Test.js:

   await decentralbank.stakeTokens(tokens("100"), {
      from: customer,
    });
  

  DecentralBank.sol:

  function stakeTokens(uint256 _amount) public {
  
  
      tether.transferFrom(msg.sender, address(this), _amount);
  
      // update staking balance
      stakingBalance[msg.sender] = stakingBalance[msg.sender] + _amount;
  
      // add user to stakers array *only* if they haven't staked already
      if (!hasStaked[msg.sender]) {
          stakers.push(msg.sender);
      }
  
      // update stakng status
      isStaking[msg.sender] = true;
      hasStaked[msg.sender] = true;
  }
  

  Tether.sol:

   function transferFrom(
      address _from,
      address _to,
      uint256 _value
  ) public  returns  (bool success) {
      require(_value <= balanceOf[_from]);
      require(_value <= allowance[_from][msg.sender]);
      balanceOf[_from] -= _value;
      balanceOf[_to] += _value;
      allowance[_from][msg.sender] -= _value;
      emit Transfer(_from, _to, _value);
      return true;
  }
  
• How to get all transactions between a personal wallet address and a contract address in Ethereum?

  I am implementing a dApp and I need to keep tracks of how much one address has spent on my smart contract.

  I tried using EtherScan API but they can only query all transactions from one address, not two.