小编YON*_*JNS的帖子

我尝试使用validation_data方法，但有问题

model.fit([X['macd_train'], X['rsi_train'],X['ema_train']],
           Y['train'],
           sample_weight=sample_weight,
           validation_data=([X['macd_valid'],
                             X['rsi_valid'],
                             X['ema_valid']],
                             Y['valid']),
           epochs=nb_epochs,
           batch_size=512,
           verbose=True,
           callbacks=callbacks)

我收到一个错误：

ValueError: The model expects 3  arrays, but only received one array. Found: array with shape (127, 100, 8)

如果我使用，我的代码可以正常运行 validation_data=None

这是我的变量信息

X['macd_train'].shape, X['macd_valid'].shape
(507, 100, 2), (127, 100, 2)

X['rsi_train'].shape, X['rsi_valid'].shape
(507, 100, 1), (127, 100, 1)

X['ema_train'].shape, X['ema_valid'].shape
(507, 100, 6), (127, 100, 6)

Y['train'].shape, Y['valid'].shape
(507, 1), (127, 1)

我尝试将一堆数据插入数据库

insert_list = [(1,1,1,1,1,1),(2,2,2,2,2,2),(3,3,3,3,3,3),....] #up to 10000 tuples in this list

conn = pyodbc.connect('DRIVER={FreeTDS};SERVER=xxxxx;DATABASE=xxxx;UID=xx;PWD=xx;TDS_Version=7.0')
cursor = conn.cursor()

sql = "insert into ScanEMAxEMAHistoryDay(SecurityNumber, EMA1, EMA2, CrossType, DayCross, IsLocalMinMax) values (?, ?, ?, ?, ?, ?)"

cursor.executemany(sql, insert_list)

cursor.executemany(sql,insert_list)

pyodbc.ProgrammingError:('参数类型无效.param-index = 4 param-type = numpy.int64','HY105')

减少到100元组:

cursor.executemany(sql, insert_list[:100])

cursor.executemany(sql,insert_list [:100])

pyodbc.ProgrammingError:('参数类型无效.param-index = 4 param-type = numpy.int64','HY105')cursor.executemany(sql,insert_list [:100])

减少到5元组:

cursor.executemany(sql, insert_list[:5])
conn.commit()

这可以插入数据库

我试着:

sql = 'SET GLOBAL max_allowed_packet=50*1024*1024'
cursor.execute(sql)

在excutemany()之前,它有一个错误:

pyodbc.ProgrammingError:('42000',"[42000] [FreeTDS] [SQL Server]'GLOBAL'不是公认的SET选项.(195)(SQLExecDirectW)")

我是怎么解决这个问题的

谢谢.

我有一个从 pylab_examples 示例代码创建 OHLC 图表的代码：来自http://matplotlib.org/examples/pylab_examples/finance_demo.html的 Finance_demo.py ：

图表输出

然后我尝试在迄今为止的 20 处绘制一条水平线，但出现空图错误。

这是代码：

#!/usr/bin/env python
import matplotlib.pyplot as plt
from matplotlib.dates import DateFormatter, WeekdayLocator,\
    DayLocator, MONDAY
from matplotlib.finance import quotes_historical_yahoo_ohlc, candlestick_ohlc


# (Year, month, day) tuples suffice as args for quotes_historical_yahoo
date1 = (2004, 2, 1)
date2 = (2004, 4, 12)


mondays = WeekdayLocator(MONDAY)        # major ticks on the mondays
alldays = DayLocator()              # minor ticks on the days
weekFormatter = DateFormatter('%b %d')  # e.g., Jan 12
dayFormatter = …

我正在尝试将所有内容作为图像保存到另一个页面中。

我已经探索了执行此操作的方法，因此我认为我需要首先将该页面转换为画布。

因此，我尝试使用要先将其保存为 iframe 的链接，然后将 iframe 转换为画布，但它不起作用。

$(document).ready(function(){

    var element = $("#html-content-holder"); // global variable
    var getCanvas; // global variable

    $("#btn-Preview-Image").on('click', function () {
        html2canvas(element, {
            onrendered: function (canvas) {
                $("#previewImage").append(canvas);
                getCanvas = canvas;
            }
        });
    });

    $("#btn-Convert-Html2Image").on('click', function () {
        var imgageData = getCanvas.toDataURL("image/png");
        // Now browser starts downloading it instead of just showing it
        var newData = imgageData.replace(/^data:image\/png/, "data:application/octet-stream");
        $("#btn-Convert-Html2Image").attr("download", "your_pic_name.png").attr("href", newData);
    });

});

<script src="http://files.codepedia.info/uploads/iScripts/html2canvas.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<iframe id="html-content-holder" width="100%" height="100%" src="http://api.marketanyware.com/chartv2/engine/index.html?{bodyColor:%27#000000',api:{params:[{Stock:'SET',Period:'2hour',ChartList:{OHLC:true,EODHLine:true,EMA: [5, 10, 25, 50, 75, …