def update_view(self): self.img.clear() self.img.setSelection(None) self.lsx = None self.lsy = None self.wavenumbers = None self.data_xs = None self.data_imagepixels = None if self.data and len(self.data.domain.attributes): if self.attr_x is not None: xat = self.data.domain[self.attr_x] ndom = Domain([xat]) datam = Table(ndom, self.data) coorx = datam.X[:, 0] else: coorx = np.arange(len(self.data)) self.lsx = lsx = values_to_linspace(coorx) self.data_xs = coorx self.wavenumbers = wavenumbers = getx(self.data) self.lsy = lsy = values_to_linspace(wavenumbers) # set data imdata = np.ones((lsy[2], lsx[2])) * float("nan") xindex = index_values(coorx, lsx) yindex = index_values(wavenumbers, lsy) for xind, d in zip(xindex, self.data.X): imdata[yindex, xind] = d self.data_imagepixels = xindex self.img.setImage(imdata, autoLevels=False) self.img.setLevels([0, 1]) self.update_levels() self.update_color_schema() # shift centres of the pixels so that the axes are useful shiftx = _shift(lsx) shifty = _shift(lsy) left = lsx[0] - shiftx bottom = lsy[0] - shifty width = (lsx[1]-lsx[0]) + 2*shiftx height = (lsy[1]-lsy[0]) + 2*shifty self.img.setRect(QRectF(left, bottom, width, height)) self.refresh_img_selection()
def update_view(self): self.img.clear() self.img.setSelection(None) self.legend.set_colors(None) self.lsx = None self.lsy = None self.wavenumbers = None self.data_xs = None self.data_imagepixels = None if self.data and len(self.data.domain.attributes): if self.attr_x is not None: xat = self.data.domain[self.attr_x] ndom = Domain([xat]) datam = self.data.transform(ndom) coorx = datam.X[:, 0] else: coorx = np.arange(len(self.data)) self.lsx = lsx = values_to_linspace(coorx) self.data_xs = coorx self.wavenumbers = wavenumbers = getx(self.data) self.lsy = lsy = values_to_linspace(wavenumbers) # set data imdata = np.ones((lsy[2], lsx[2])) * float("nan") xindex = index_values(coorx, lsx) yindex = index_values(wavenumbers, lsy) for xind, d in zip(xindex, self.data.X): imdata[yindex, xind] = d self.data_imagepixels = xindex self.img.setImage(imdata, autoLevels=False) self.update_levels() self.update_color_schema() # shift centres of the pixels so that the axes are useful shiftx = _shift(lsx) shifty = _shift(lsy) left = lsx[0] - shiftx bottom = lsy[0] - shifty width = (lsx[1] - lsx[0]) + 2 * shiftx height = (lsy[1] - lsy[0]) + 2 * shifty self.img.setRect(QRectF(left, bottom, width, height)) self.refresh_img_selection()
def _points_at_pos(self, pos): if self.data and self.lsx and self.lsy: x, y = pos.x(), pos.y() x_distance = np.abs(self.data_xs - x) sel = (x_distance < _shift(self.lsx)) wavenumber_distance = np.abs(self.wavenumbers - y) wavenumber_ind = np.argmin(wavenumber_distance) return sel, wavenumber_ind return None, None
def _points_at_pos(self, pos): if self.data and self.lsx and self.lsy: x, y = pos.x(), pos.y() x_distance = np.abs(self.data_xs - x) sel = (x_distance < _shift(self.lsx)) wavenumber_distance = np.abs(self.wavenumbers - y) wavenumber_ind = np.argmin(wavenumber_distance) return sel, wavenumber_ind return None, None