the following image shows my actuall result of a merged modis image.
I used pyhdf.SD to open and manipulate and plot the data in a loop. It started on the right upper corner.
The plot is ok... put on some areas overlaped. The easiest way is to remove the black borders.
I wanted to use this:
np.ma.masked_where(rgb_projected==0.,rgb_projected)
rgb_projected is the original rgb matix.
rgb_projected = np.zeros((1000, 1000,3))
rgb_projected[:,:,0] = z_01[:,:]
rgb_projected[:,:,1] = z_02[:,:]
rgb_projected[:,:,2] = z_03[:,:]
rgb_projected.shape
whereAreNaNs = np.isnan(rgb_projected);
rgb_projected[whereAreNaNs] = 0.;
rgb_plot=np.ma.masked_where(rgb_projected==0.,rgb_projected)
The interesting thing is, that everything is True although the first valueas are 0.
Any ideas?
Related
I have a QScrollArea Widget, which starts empty;
It has a vertical layout, with a QGridLayout, and a vertical spacer to keep it at the top, and prevent it from stretching over the whole scroll area;
Elsewhere in the program, there is a QTextEdit, which when changed, has its contents scanned for "species" elements, and then they are added to the QGridLayout. Any species elements which have been removed are removed too. This bit works;
I have turned the vertical scrollbar on all the time, so that when it appears it does not sit on top of the other stuff in there. Note that the scroll bar is larger than the scroll box already though, despite not needing to be.
This is the problem. The scroll area seems to be preset, and i cannot change it. If i add more rows to the QGridLayout, the scroll area doesn't increase in size.
Instead, it stays the same size, and squeezes the QGridLayout, making it look ugly (at first);
And then after adding even more it becomes unusable;
Note that again, the scroll bar is still the same size as in previous images. The first two images are from Qt Designer, the subsequent 3 are from the program running.
If I resize the window so that the QScrollArea grows, then I see this:
Indicating that there's some layout inside the scroll area that is not resizing properly.
My question is; what do I need to do to make the scrollable area of the widget resize dynamically as I add and remove from the QGridLayout?
If you're coming here from Google and not having luck with the accepted answer, that's because you're missing the other secret invocation: QScrollArea::setWidget. You must create and explicitly identify a single widget which is to be scrolled. It's not enough to just add the item as a child! Adding multiple items directly to the ScrollArea will also not work.
This script demonstrates a simple working example of QScrollArea:
from PySide.QtGui import *
app = QApplication([])
scroll = QScrollArea()
scroll.setWidgetResizable(True) # CRITICAL
inner = QFrame(scroll)
inner.setLayout(QVBoxLayout())
scroll.setWidget(inner) # CRITICAL
for i in range(40):
b = QPushButton(inner)
b.setText(str(i))
inner.layout().addWidget(b)
scroll.show()
app.exec_()
The documentation provide an answer :
widgetResizable : bool
This property holds whether the scroll area should resize the view widget.
If this property is set to false (the default), the scroll area honors the size of its widget.
Set it to true.
Why don't you use a QListView for your rows, it will manage all the issues for you? Just make sure that after you add it you click on the Class (top right window of designer) and assign a layout or it wont expand properly.
I use a QLIstWidget inside a QScrollArea to make a scrollable image list
Try this for adding other objects to the list, this is how I add an image to the list.
QImage& qim = myclass.getQTImage();
QImage iconImage = copyImageToSquareRegion(qim, ui->display_image->palette().color(QWidget::backgroundRole()));
QListWidgetItem* pItem = new QListWidgetItem(QIcon(QPixmap::fromImage(iconImage)), NULL);
pItem->setData(Qt::UserRole, "thumb" + QString::number(ui->ImageThumbList->count())); // probably not necessary for you
QString strTooltip = "a tooltip"
pItem->setToolTip(strTooltip);
ui->ImageThumbList->addItem(pItem);
Update on Artfunkel's answer:
Here's a PySide6 demo that uses a "Populate" button to run the for loop adding items to the scroll area. Each button will also delete itself when clicked.
from PySide6.QtWidgets import *
app = QApplication([])
scroll = QScrollArea()
scroll.setWidgetResizable(True) # CRITICAL
inner = QFrame(scroll)
inner.setLayout(QVBoxLayout())
scroll.setWidget(inner) # CRITICAL
def on_remove_widget(button):
button.deleteLater()
def populate():
for i in range(40):
b = QPushButton(inner)
b.setText(str(i))
b.clicked.connect(b.deleteLater)
inner.layout().addWidget(b)
b = QPushButton(inner)
b.setText("Populate")
b.clicked.connect(populate)
inner.layout().addWidget(b)
scroll.show()
app.exec()
I'm using python to build an application by PyQt5, the main idea is to display images from a directory and for each image some masks show up next to it to select one of them (i.e. for each image there are different number of masks). So, I want to display these masks in a "container" that can handle this dynamically.
I tried QlistWidget in a scroll area and the masks are displayed as icons in it, but I want to use something else to handle them easier and retrieve any mask as Qpixmap or QImage to use it in another operations without convert it multiple times (which slows down the program)
this is the part that displays the masks (this is the only way that worked with me)
for ann in annotations:
mask = self.coco.annToMask(ann)
mask_img = Image.fromarray((mask*255).astype(np.uint8))
qt_img = ImageQt.ImageQt(mask_img) # convert Image to ImageQt
icon = QtGui.QIcon(QtGui.QPixmap.fromImage(qt_img))
item = QtWidgets.QListWidgetItem(icon, f"{annIndex}")
self.listWidget.addItem(item)
annIndex += 1
Working with InDesign script I am using
TF.fit(FitOptions.frameToContent). //TF as a textFrame
to fit the content into the textframe and remove the extra space
But when I have a condition for vertical justification options set to Align: Bottom i am not able to fit the content.
Assuming this to be my TextFrame (Image 1)
Here are the properties of the text frame (Image 2)
When I do FitOptions.frameToContent i get this (Image 3)
But when the text frame has the align property set to the bottom I want this to fit it like this(this was achieved by double-clicking on the top center alignment as shown in the red indicator below. (Image 4) (Image 5)
I tried all the available options at http://jongware.mit.edu/idcs4js/pe_FitOptions.html but I had no luck making it work. Please help me to achieve the same using scripting.
Cross-reference: https://community.adobe.com/t5/indesign/fit-to-frame-with-vertical-justification-options/td-p/11120458?page=1
================== First try ==================
var tf = app.selection[0];
var tfp = tf.textFramePreferences;
tfp.autoSizingReferencePoint = AutoSizingReferenceEnum.BOTTOM_CENTER_POINT;
tfp.autoSizingType = AutoSizingTypeEnum.HEIGHT_ONLY;
tf.fit(FitOptions.frameToContent)
This still gives me the same result(image 3) but expected result is image 4.
================== Second try ==================
This is the auto-sizing property.
This command indeed seems to work only with the top edge as a reference point, just as it does in the UI (if you actually use the menu command, not clicking any borders).
What you could do to work around this, is to temporarily enable auto-sizing (height only) and setting the reference point for auto-sizing to the bottom:
var tf = app.selection[0];
var tfp = tf.textFramePreferences;
tfp.autoSizingReferencePoint = AutoSizingReferenceEnum.BOTTOM_CENTER_POINT;
tfp.autoSizingType = AutoSizingTypeEnum.HEIGHT_ONLY;
tfp.autoSizingType = AutoSizingTypeEnum.OFF;
Note, the last line turns off the auto sizing again and is optional; if you don't mind that the frame keeps auto sizing you don't need to turn it off.
I am trying to write a pine script with two indicators one overlaid on the chart (EMA) and another on its own?(Stoch) I cannot seem to find any info on how to separate these (Visually) but keep them within 1 pine script, ie to be able to take trading decisions based on these.
The earlier answer from Luc is right, unfortunately. Each script can either create plots that are overlaid on the default price chart, or shown in a different pane, but not both. But there is a workaround.
Suppose you've made some non-trivial calculation in your script and you'd like to put it in different pane. E.g. the next code:
//#version=4
study(title="Stochastic", shorttitle="Stoch", format=format.price, precision=2)
periodK = input(14, title="K", minval=1)
periodD = input(3, title="D", minval=1)
smoothK = input(3, title="Smooth", minval=1)
k = sma(stoch(close, high, low, periodK), smoothK)
d = sma(k, periodD)
plot(k, title="%K", color=color.blue)
plot(d, title="%D", color=color.orange)
h0 = hline(80)
h1 = hline(20)
fill(h0, h1, color=color.purple, transp=75)
// This next plot would work best in a separate pane
someNonTrivialCalculatedSeries = close
plot(ema(someNonTrivialCalculatedSeries, 25), title="Exporting Plot")
Because they have different scale, one of them most likely will break another indicator's scale.
So you'd like show Stoch in different pine, whereas ema() should be overlayed with the main chart. For that you should make the next steps:
Turn off in the study's the extra plot to return scale to normal:
Apply to the chart the next script:
//#version=4
study("NonOverlayIndicator", overlay=true)
src = input(defval=close, type=input.source)
plot(src)
Choose in the second's script inputs source required plot from the first script:
And voilà - you got the plots in different pines:
But if you want split the plots because you have retrictions on amount of studies you allowed to apply (e.g. 3 for free-account) - that won't help you.
It cannot be done. A script runs either in overlay=true mode on the chart, in which case it cannot direct plots elsewhere, or in a separate pane when overlay=false (the default).
When the script is running in a pane, it can change the color of the chart bars using barcolor(), but that's the only way it can modify the chart.
It is possible to rescale signals so that multiple bounded (e.g., 0-100, -1 to +1) signals generated by one script appear one on top of the other, but this is typically impossible in overlay mode, as the vertical scale varies with the bars on the chart. The only way for an overlay script to work with its own scale is when it uses No scale, but this prevents the indicator's plots to plot relative to price, and so the chart's bars.
Nice workaround from Michael.
Unfortunately, this only seems to work to pass data for one plot.
I would like to pass data for 3 different plots to the stock price graph.
If I try this, for 'input.source' I can only select the standard sources: "open, high, low, close ...". I can not select the data from other indicators.
If I remove plots 2 and 3, it works as Michael described.
Anybody has a workaround for the workaround..? ;-)
I am now using the MPAndroidChart to draw line chartmy chart
As you can see from the above screenshot, the color specified by me(showed in legend) is not the same as the finally filled in below the chart, is there any way to make sure that the different color will not mixed together?
Below is the code I used to draw two of the lines
LineDataSet vlfDs = new LineDataSet(vlfValues, "VLF");
vlfDs.setMode(LineDataSet.Mode.CUBIC_BEZIER);
vlfDs.setCubicIntensity(0.2f);
vlfDs.setDrawFilled(true);
vlfDs.setDrawCircles(false);
vlfDs.setLineWidth(0);
vlfDs.setCircleRadius(4f);
vlfDs.setColor(Color.YELLOW);
vlfDs.setFillColor(Color.YELLOW);
vlfDs.setFillAlpha(100);
LineDataSet lfDs = new LineDataSet(lfValues, "LF");
lfDs.setCubicIntensity(0.2f);
lfDs.setDrawFilled(true);
lfDs.setDrawCircles(false);
lfDs.setLineWidth(0);
lfDs.setCircleRadius(4f);
lfDs.setCircleColor(Color.WHITE);
lfDs.setColor(Color.GREEN);
lfDs.setFillColor(Color.GREEN);
lfDs.setFillAlpha(100);
hrvLineData = new LineData(hfDs,lfDs,vlfDs, hrDs);
hrvLineData.setValueTextSize(0);
hrvLineData.setDrawValues(false);
hrvChartView.setData(hrvLineData);
hrvChartView.invalidate();
It's turned out that I need to use setFillAlpha(255) instead of setFillAlpha(100)
You can also use something similar to the following solution which overrides the default LineChartRenderer and a uses a custom implementation of IFillFormatter to fill only the areas between the datasets.
Android - Fill the color between two lines using MPAndroidChart